N S W E
Wildlife Expeditions

Wildlife of
Maryland

Maryland's Chesapeake Bay, tidal marshes, forests, and mountain ridges pack an outsized diversity of wildlife into a small Mid-Atlantic state.
236 Species
25,141 km² Land Area
Overview

About Maryland

Maryland is shaped by water. The Chesapeake Bay and its rivers and tidal marshes make a productive estuary. They feed big food webs from blue crabs and oysters to striped bass, ospreys, and bald eagles. The bay joins a wide mix of upland habitats—Piedmont hardwood forests, serpentine barrens, farmland, and Appalachian ridgelines—so coastal and mountain species live close in this small state. Key areas include seagrass beds and oyster reefs that are nurseries, brackish and freshwater tidal wetlands on the Eastern Shore for wintering and migrating waterfowl, and forested headwaters and cold streams in western Maryland that support brook trout. Barrier islands, Atlantic beaches, interior forests, and meadow edges host shorebirds, songbirds, white-tailed deer, and growing predators. One can see raptors over marsh, Delmarva fox squirrels in coastal forest, and warblers and salamanders in the ridges—all within a state shaped by the Bay.

Physical Features

Geography

Maryland is small and varied, centered on the Chesapeake Bay estuary and sloping from Appalachian highlands to the coastal plain, creating sharp changes in elevation, salinity, and land cover. Tidal marshes, estuaries, and barrier islands support waterfowl, shorebirds, crabs, and anadromous fish, while Piedmont and Appalachian forests and valleys support woodland wildlife and serve as migration and spawning corridors.

25,141 km² (land area) Land Area
42nd largest U.S. state (by area) Size Rank
State Type
Elevation Range

Sea level to ~1,020 m (Hoye-Crest/Backbone Mountain)

Coastline

Atlantic Ocean coastline via the Eastern Shore/barrier islands plus extensive Chesapeake Bay and tidal river shoreline (estuarine coast).

Key Landscapes

Chesapeake Bay estuary and extensive tidal shoreline (brackish-to-salty gradients) Atlantic Coastal Plain (pine/oak woods, flatwoods, freshwater wetlands, tidal marshes) Barrier islands and coastal beaches (e.g., Assateague Island) Major rivers and tidal tributaries: Potomac, Susquehanna, Patuxent, Chester, Choptank, Nanticoke, Wicomico Piedmont uplands (mixed hardwood forests, rolling hills, stream networks) Blue Ridge and Ridge-and-Valley Appalachians in western Maryland (forested ridges, rocky outcrops, coldwater streams)
State Symbols

Official Wildlife Symbols

bird

Baltimore oriole

Designated 1947

fish

Striped bass (rockfish)

Designated 1965

insect

Baltimore checkerspot

Designated 1973

reptile

Diamondback terrapin

Designated 1994

marine

Blue crab

Designated 1989

wildflower

Black-eyed Susan

Designated 1918

tree

White oak

Designated 1941

animal

Calico cat

Designated 2001

animal

Chesapeake Bay Retriever

Designated 1964

Parks & Reserves

Protected Areas

Maryland protects lands and waters from Chesapeake Bay tidal marshes and estuaries to coastal barrier islands and beaches, Piedmont rivers, and Appalachian ridges. Agencies include the National Park Service, U.S. Fish and Wildlife, Maryland State Parks and Forests, and WMAs. Goals: water quality, shoreline habitat, migratory birds (Atlantic Flyway), anadromous fish (shad, river herring), and rare tidal marshes.

Protected Coverage

~23% of Maryland's land area is under some form of public protection or conservation ownership/easement (approximate; varies by definition and data source).

National Parks & Preserves

Assateague Island National Seashore

~41,000 acres (park total, MD+VA)

A premier Mid-Atlantic barrier-island system protecting beaches, dunes, maritime forests, and salt marshes; exceptional for shorebird migration, coastal breeding birds, and productive nearshore/tidal food webs.

Piping plover Sanderling Osprey Horseshoe crab Assateague feral horse

Chesapeake and Ohio Canal National Historical Park

~20,000 acres (184.5-mile corridor)

A long Potomac River corridor with riparian forest, wetlands, and backwaters that function as a major wildlife movement route; notable for eagle viewing, beavers/otters, and riverine birdlife.

Bald eagle North American river otter American beaver Great blue heron Smallmouth bass

Catoctin Mountain Park

~5,770 acres

Protects a large, relatively intact block of Appalachian Piedmont forest with mature hardwoods, rocky streams, and interior-bird habitat; strong for mammals and forest songbirds.

American black bear White-tailed deer Wild turkey Pileated woodpecker Bobcat

Piscataway Park

~5,000+ acres (protected landscapes along the Potomac; parcel-based)

Safeguards a scenic and ecologically important Potomac shoreline and floodplain forests; excellent raptor and waterbird habitat with wetlands that support nesting and migratory species.

Bald eagle Osprey Wood duck Great blue heron American beaver

Greenbelt Park

~1,176 acres

A surprisingly large protected forest patch within the Washington, DC metro region; valuable for breeding songbirds, owls, and urban-edge mammals, and for maintaining regional habitat connectivity.

Wood thrush Barred owl Red fox White-tailed deer Eastern box turtle

State & Provincial Parks

Patapsco Valley State Park

~16,000 acres

One of Maryland's most important protected river corridors, with extensive hardwood forest, steep stream valleys, and wetlands that support diverse birdlife and recovering river mammals.

North American river otter Belted kingfisher Wood thrush White-tailed deer Red fox

Janes Island State Park

~2,900 acres

A standout Chesapeake Bay salt-marsh complex and shallow-water habitat; exceptional paddling-based wildlife viewing and strong for wading birds, marsh birds, and estuarine reptiles.

Osprey Great blue heron Snowy egret Diamondback terrapin Blue crab

Elk Neck State Park

~2,370 acres

Peninsula habitats (shoreline, tidal coves, forest) that concentrate migratory raptors and waterfowl; notable vantage points for eagle and osprey viewing along the Upper Bay.

Bald eagle Osprey Canvasback (seasonal) Tundra swan (seasonal) Eastern box turtle

Calvert Cliffs State Park

~1,300 acres

Forested ravines and wetlands adjacent to the Chesapeake Bay create a productive mosaic for amphibians, reptiles, and forest birds; also supports coastal-plain biodiversity.

Barred owl Spotted salamander White-tailed deer Red fox Wild turkey

Wildlife Refuges

Blackwater National Wildlife Refuge

~28,000 acres

One of the East Coast's most important tidal-marsh refuges, critical for wintering waterfowl, marsh birds, and rare Eastern Shore mammals; a flagship site for climate/sea-level-rise marsh conservation.

Delmarva fox squirrel Bald eagle Tundra swan (winter) American black duck Great egret

Patuxent Research Refuge

~12,800 acres

A large protected landscape managed for wildlife research and habitat conservation, featuring forests, meadows, and wetlands that support high bird diversity and healthy mammal populations close to major urban areas.

Wood duck American beaver Red fox Barred owl White-tailed deer

Eastern Neck National Wildlife Refuge

~2,285 acres

An island refuge in the Chesapeake Bay with shorelines, fields, and wetlands that provide key stopover and winter habitat for waterfowl and raptors.

Bald eagle Osprey Canada goose Great blue heron Diamondback terrapin
Animals

Wildlife

Maryland's wildlife is defined by the Chesapeake Bay and its tributaries, Atlantic barrier islands, and a rapid west-to-east transition from Appalachian forests to Piedmont woodlands to Coastal Plain marshes. This mix creates exceptional aquatic biodiversity (estuarine and anadromous fish, crabs, oysters) and major bird migration/wintering concentrations, alongside classic eastern-forest mammals and reptiles tied to tidal wetlands and beach-dune systems.

≈90-110 species Mammals
≈430-470 species recorded (≈200+ regular breeders) Birds
≈45-55 species Reptiles
≈20-25 species Amphibians
≈350-500 species (freshwater + estuarine/marine, depending on checklist scope) Fish
Examples

Iconic Species

Bald Eagle
Bald Eagle A Chesapeake Bay comeback story-Maryland has some of the highest nesting densities in the eastern U.S., and eagles are routinely seen along tidal rivers and reservoirs.
Osprey
Osprey A signature Bay raptor, commonly nesting on channel markers and platforms; iconic for visitors birding the Eastern Shore and tidal creeks.
Canvasback
Canvasback Maryland's state duck and a celebrated wintering diving duck on the Chesapeake Bay, especially where submerged aquatic vegetation and open water concentrate flocks.
Tundra Swan
Tundra Swan Large wintering and migratory concentrations use Chesapeake Bay shallows and adjacent agricultural fields, drawing birders to the Eastern Shore.
Diamondback Terrapin A brackish-marsh specialist closely tied to Chesapeake and coastal saltmarshes; notable for nesting on sandy edges and living in tidal creeks.
Blue Crab The Bay's most famous creature and a defining part of the region's ecology and culture; abundance varies with habitat and management conditions.
Striped Bass (Rockfish) The Chesapeake's flagship sportfish; a key predator that supports major recreational fisheries and seasonal spawning runs in tributaries.
American Black Bear
American Black Bear Most common in western Maryland's Appalachian forests; increasingly encountered as populations expand and visitors explore mountain public lands.
Brook Trout
Brook Trout A classic coldwater Appalachian stream fish, strongly associated with high-quality headwater habitat in western Maryland.
Assateague (feral) Horse Not native, but a defining wildlife-viewing experience on Assateague's barrier island landscapes; managed as free-roaming feral herds.

Endemic & Rare Species

Delmarva Fox Squirrel

Sciurus niger cinereus

Range-restricted subspecies; formerly federally endangered (recovered and delisted), still a conservation focus in suitable habitat

A Coastal Plain/Eastern Shore specialty strongly tied to mature woods and forested wetland mosaics; Maryland is central to its remaining range.

Bog Turtle

Glyptemys muhlenbergii

Federally Threatened; highly vulnerable to wetland alteration and poaching

Occurs in rare spring-fed fens and wet meadows (especially in parts of the Piedmont/Appalachian valleys); Maryland sites are regionally important.

Puritan Tiger Beetle

Ellipsoptera puritana

Federally Threatened; very limited distribution

A highly localized insect of eroding sandy/clay banks (notably along the Potomac River in Maryland), making Maryland a key stronghold.

Piping Plover

Charadrius melodus

Federally Threatened (Atlantic Coast population); beach-nesting species sensitive to disturbance

Nests on Atlantic barrier island beaches where protection and stewardship efforts are critical to reproductive success.

Atlantic Sturgeon

Acipenser oxyrinchus oxyrinchus

Federally Endangered (distinct population segments); recovering but still rare

Uses Chesapeake Bay and larger tributaries for migration and foraging; restoration and bycatch reduction are important in Maryland waters.

Shortnose Sturgeon

Acipenser brevirostrum

Federally Endangered

A rare, long-lived sturgeon that occurs in Chesapeake Bay waters; Maryland's waters contribute to regional conservation and monitoring efforts.

Northern Long-eared Bat

Myotis septentrionalis

Federally listed (status has changed over time due to white-nose syndrome impacts); severely reduced in many areas

Forest bat historically widespread; disease-driven declines have made remaining populations in Maryland a conservation priority.

Red Knot

Calidris canutus

Federally Threatened in the U.S.; migratory shorebird with key stopover needs

Uses Maryland's Atlantic coast and Bay shorelines during migration; depends indirectly on healthy horseshoe crab spawning resources regionally.

Notable Populations

  • Chesapeake Bay is one of North America's most important wintering areas for waterfowl and migratory birds (notably diving ducks like canvasbacks, plus swans and geese).
  • High densities of nesting bald eagles and widespread nesting ospreys along tidal rivers and the Bay's shoreline.
  • Major anadromous fish runs in tributaries (e.g., striped bass and American shad in systems like the Susquehanna/Upper Bay region and other spawning rivers), underpinning recreational and ecological value.
  • Regionally important beach and coastal habitat for migratory shorebirds (including federally protected species such as piping plovers and red knots).

Recent Changes

  • Bald eagle and osprey populations rebounded strongly since late-20th-century declines, aided by DDT bans, habitat protection, and management.
  • American black bears have expanded their range and visibility beyond the far western mountains, increasing sightings in parts of western/central Maryland.
  • River otters and beavers have broadly recovered in many watersheds where water quality and riparian habitat improved and trapping pressure changed.
  • Invasive fish expansion (notably Northern Snakehead, Channa argus, and expanding Blue Catfish, Ictalurus furcatus) has altered some tidal freshwater food webs and angling patterns.
  • Striped bass in the Chesapeake has faced renewed management concern due to variable recruitment and population stressors, affecting regulations and expectations for anglers.
  • Sea-level rise and increasing coastal flooding are degrading tidal marshes and low-lying nesting/foraging habitat (affecting species such as terrapins, marsh birds, and beach-nesting shorebirds).
Visit

Wildlife Viewing

Maryland is a top Mid Atlantic wildlife place with the Chesapeake Bay, Atlantic barrier islands, tidal marshes, Piedmont forests, and Appalachian highlands. Visitors can see many birds (waterfowl, shorebirds, raptors, songbirds), coastal wildlife like Assateague’s wild horses and offshore dolphins, wetland mammals (river otter, beaver, muskrat), and mountain species like black bear and the rare bobcat.

Best Seasons

Spring (Mar-May)

Peak migration for songbirds and shorebirds; spectacular warbler activity in woodlands and along the Bay. Ospreys return and begin nesting (look for nests on platforms). Amphibians are active in vernal pools; wildflowers bring insect activity and more feeding birds. Great time for guided bird walks and paddling in marshes before summer heat and crowds.

Summer (Jun-Aug)

Best for coastal and marsh wildlife at sunrise/sunset-herons/egrets feeding, clapper rails calling in marshes, and juvenile birds learning to forage. Great time for kayaking and boat-based wildlife watching on the Bay. Offshore from Ocean City and nearby waters, dolphins are often seen on boat trips; sea turtles are possible (less predictable). Expect heat, humidity, and biting insects-plan early/late outings.

Fall (Sep-Nov)

Raptor migration ramps up (hawks, falcons) and songbirds funnel along the coast; crisp weather improves hiking and viewing. The Bay region begins its waterfowl build-up later in fall. Monarchs and other migrants pass through coastal and meadow habitats. Excellent season for photography and combined birding + hiking trips in western Maryland.

Winter (Dec-Feb)

Prime time for Chesapeake Bay waterfowl and eagles: tundra swans, canvasbacks, scoters, and large rafts of ducks gather on open water; bald eagles concentrate along rivers and reservoirs. Fewer crowds and clear sightlines in leaf-off forests. Cold winds on the Bay can be intense-bring layers and wind protection for best viewing.

Top Wildlife Experiences

  • Bird the Blackwater National Wildlife Refuge (Dorchester County) by auto loop, dikes, and observation points for wintering waterfowl, bald eagles, and marsh birds; sunrise is especially productive.
  • Take a guided paddling or self-guided kayak trip in the tidal marshes of Jug Bay Wetlands Sanctuary (Patuxent River) for beavers, river otter (occasional), herons, egrets, and breeding songbirds in spring/summer.
  • Visit Assateague Island National Seashore (Maryland district) for wild horses, shorebirds, and dune ecology-combine an early-morning beach walk with a bayside scan for wading birds and migrating songbirds in fall.
  • Plan a winter eagle day along the Susquehanna River and Conowingo-area viewing pull-offs/parks (Harford/Cecil region) for bald eagles and waterfowl (always follow posted rules and view from public access areas).
  • Join a whale/dolphin-focused boat trip from Ocean City in late spring through fall for bottlenose dolphins and pelagic seabirds; whales are possible but less consistent than dolphin sightings in this area.
  • Hike and scan at Hawk Mountain-style vantage points in western Maryland-especially around Washington Monument State Park / South Mountain (Washington County) during fall migration for broad-winged hawks, kestrels, and other raptors.
  • Explore Patuxent Research Refuge (Laurel area) for accessible trails and excellent spring birding; look for woodpeckers, warblers during migration, and deer and fox sign.
  • Seek spring shorebird pulses and colonial waterbird rookeries (view from a respectful distance) around Eastern Shore wetlands and Bay-side preserves-pair with an early tide cycle for best foraging activity.

Wildlife Watching Types

Chesapeake Bay waterfowl and seabird watching (winter rafts of ducks, swans, loons/grebes in season) Bald eagle viewing (winter concentration areas; year-round nesting territories) Birding hotspots and migration watching (spring warblers, fall raptors, coastal flyways) Marsh and estuary wildlife by kayak/canoe (wading birds, rails, beaver/otter sign) Beach and barrier island wildlife walks (shorebirds, dune species, wild horses at Assateague) Dolphin and occasional whale-watching boat trips (Ocean City/Atlantic waters) Forest and mountain wildlife tracking (deer, black bear in western MD, bobcat presence; best as tracks/sign) Amphibian and reptile spotting in spring/summer (frogs, turtles; practice ethical viewing/handling avoidance)

Guided Options

  • U.S. Fish & Wildlife Service programs at Blackwater National Wildlife Refuge (seasonal interpretive walks/talks, refuge events; check refuge calendar).
  • Jug Bay Wetlands Sanctuary guided canoe/kayak trips and naturalist-led programs (seasonal).
  • Maryland Department of Natural Resources (DNR) Park Service and Natural Heritage Program events: ranger-led walks, birding programs, and seasonal nature festivals at select state parks.
  • Assateague Island National Seashore ranger programs (wild horse ecology, coastal ecosystems, night sky and seasonal nature walks).
  • Ocean City-area wildlife cruises (dolphin/eco cruises and offshore trips run by local operators; choose companies emphasizing responsible distances and wildlife-first practices).
  • Local Audubon chapters and bird clubs (e.g., field trips and seasonal bird counts across the state; ideal for visitors who want current "what's here now" guidance).
  • Chesapeake Bay Field Labs / environmental education centers and local outfitters offering guided Bay ecology paddles and birding-by-boat trips in warm months.
Habitats

Ecosystems

Maryland has many ecosystems in a small area because of east–west changes in rock, elevation, and salinity. It ranges from the Atlantic Coastal Plain (barrier islands, tidal marshes, Chesapeake Bay) through Piedmont forests and streams to Appalachian uplands. Estuaries and tidal wetlands support migratory birds, anadromous fish, and blue crab food webs; forests and farms shape water and habitat links.

Biomes

Temperate Forest

Dominant terrestrial biome, expressed as mixed oak-hickory hardwoods in the Piedmont and Ridge-and-Valley, with patches of mesic cove-like forests and hemlock ravines in cooler western drainages.

Widespread statewide away from major urban/agricultural cores; especially prominent in central and western Maryland.

Freshwater

Rivers and streams (Potomac, Susquehanna, Patuxent, Gunpowder, Choptank headwaters), reservoirs, and ponds supporting warmwater to coldwater communities; includes important anadromous corridors where freshwater meets tide.

Statewide along river networks and impoundments; densest along major watersheds.

Wetland

Extensive tidal freshwater and brackish marshes, forested wetlands, boggy pockets, and floodplain wetlands; critical for nutrient cycling and habitat for waterfowl, wading birds, and amphibians.

High concentration around the Chesapeake Bay, its tributaries, and the Coastal Plain; scattered inland floodplains.

Marine

Coastal and estuarine waters including the Chesapeake Bay's brackish-to-saline gradients and Atlantic nearshore waters off Ocean City/Assateague; supports submerged aquatic vegetation, shellfish beds, and coastal fisheries.

Strong presence along the Chesapeake Bay shoreline/tributaries and a narrow Atlantic coastline.

Habitats

Deciduous Forest

Oak-hickory and mixed hardwood stands common in the Piedmont and western highlands; includes rich spring ephemerals and mast-producing canopy important for deer, turkey, and songbirds.

Coniferous Forest

Scattered pine stands on the Coastal Plain and hemlock/pine in cooler western ravines; also includes planted/managed conifers in some landscapes.

Forest

Large forest blocks occur in western Maryland (Appalachian regions) and in protected areas; fragmented near the Baltimore-Washington corridor.

Woodland

Edge woodlands and mixed second-growth patches interwoven with farms and suburbs, especially in central Maryland.

Grassland

Old fields, utility corridors, airport/industrial grasslands, and conservation grasslands that support grassland birds where managed; often embedded in agricultural regions.

Shrubland

Early-successional thickets from disturbance and management (powerline corridors, regenerating clearcuts, coastal scrub), valuable for pollinators and certain birds.

River/Stream

Major rivers include the Potomac and Susquehanna plus many Bay tributaries; habitats range from rocky Piedmont runs to tidal rivers with submerged aquatic vegetation.

Lake

Mostly reservoirs and impoundments (e.g., Deep Creek Lake, Loch Raven, Liberty Reservoir) supporting recreation and freshwater fish communities.

Pond

Farm ponds, beaver ponds, and stormwater ponds provide amphibian breeding habitat but vary widely in quality.

Wetland

Tidal marshes and freshwater wetlands across the Coastal Plain and Bay shorelines; includes forested wetlands and floodplain wetlands inland.

Marsh

Brackish and salt marshes along Bay margins and Atlantic back-barrier areas; key areas include Blackwater NWR and other Eastern Shore marsh complexes.

Swamp

Forested swamps and wet woods in the Coastal Plain and along lowland floodplains; includes bald cypress-tupelo type pockets in suitable areas.

Bog

Localized, uncommon peat-influenced wetlands in cooler/wetter upland settings (western Maryland) and a few acidic wetland pockets.

Estuary

The Chesapeake Bay and its tributary mouths form one of North America's largest estuarine systems with strong salinity gradients, SAV beds, oyster reefs (restored and remnant), and nursery habitat.

Coastal

Atlantic Coastal Plain and barrier-island/back-barrier environments with dunes, swales, bayside marshes, and coastal bays near Ocean City/Assateague.

Beach

Sandy Atlantic beaches and bay beaches, especially around Assateague Island and Ocean City; dynamic habitat shaped by storms and erosion.

Rocky Shore

Localized along harder shorelines and riprap areas (more common on parts of the Bay and rocky river sections than on the Atlantic barrier coast).

Seabed/Benthic

Benthic habitats in the Bay and coastal ocean (mud, sand, shell, and mixed substrates) supporting worms, bivalves, crabs, and demersal fish; includes shell-bottom where oysters occur.

Open Ocean

Nearshore Atlantic waters off Maryland's short coastline used by migratory fish and marine birds; influenced by coastal currents and seasonal temperature shifts.

Urban

Dense urban habitats in the Baltimore-Washington corridor; includes urban waterways, parks, and heavily modified shorelines.

Suburban

Extensive suburban matrix with fragmented forests, stream valleys, and managed green spaces; significant driver of watershed impacts.

Agricultural/Farmland

Prominent on the Eastern Shore and parts of central/western valleys; row crops and pasture mosaics strongly influence nutrient and sediment loads to tributaries.

Ecoregions

Middle Atlantic Coastal Plain (EPA Level III) Northern Piedmont (EPA Level III) Blue Ridge (EPA Level III) Ridge and Valley (EPA Level III) Central Appalachians (EPA Level III) Western Allegheny Plateau (EPA Level III) WWF: Chesapeake Bay Lowlands WWF: Middle Atlantic Coastal Forests WWF: Northeastern Coastal Forests
Protection

Conservation

Primary Threats

  • Nutrient runoff (nitrogen/phosphorus) from Eastern Shore poultry and crops, and from suburbs, plus stormwater and wastewater, causes algal blooms, low oxygen, and damages submerged aquatic vegetation (SAV) in the Chesapeake Bay. Sediment clouds water and harms striped bass and shad spawning.
  • Conversion and fragmentation of forests, wetlands, and grasslands-especially around the Baltimore-Washington metro area and along expanding exurban corridors-reduces interior forest habitat (impacting neotropical migratory birds) and eliminates tidal marsh and wetland buffers critical for water quality and coastal species.
  • Sea-level rise and land subsidence on the Eastern Shore accelerate tidal marsh drowning and shoreline erosion, squeezing habitats between rising water and hardened shorelines. Warming waters and altered precipitation intensify harmful algal blooms, shift fish distributions, and increase flood events that scour streams in the Piedmont and Appalachians.
  • Aquatic invasives (e.g., blue catfish and northern snakehead in tidal rivers) alter food webs and prey on native fish; invasive plants (e.g., Phragmites in marshes, Japanese stiltgrass in forests) reduce native plant diversity and degrade habitat structure for marsh birds and forest understory-dependent wildlife.
  • High recreational use of beaches, dunes, and nearshore waters can disturb nesting shorebirds and resting waterbirds; boating and shoreline recreation increase disturbance and can damage SAV beds. In heavily visited parks and river corridors, trampling and off-trail use degrade sensitive habitats.
  • Road networks and river crossings fragment habitats and create barriers for migratory fish; shoreline armoring, bulkheads, and sea walls reduce living shoreline habitat and prevent marsh migration. Utility corridors and port/industrial facilities along tidal waters contribute to habitat fragmentation and localized impacts.
  • Historical ditching/draining of wetlands, channelization of streams, and floodplain disconnection reduce natural water storage, increase peak flows, and degrade aquatic habitat. Ongoing shoreline hardening and dredging in some areas can simplify nearshore habitat and alter sediment dynamics.
  • While agriculture is long-established, continued intensification (notably poultry-linked nutrient loads on the Eastern Shore) increases fertilizer/manure applications and runoff risk, and can reduce hedgerows and riparian buffers that support pollinators and grassland birds.
  • Impervious surface growth around the Baltimore-Washington region increases flashier storm flows, stream incision, and pollutant delivery. Urban heat and altered hydrology stress small urban streams and reduce connectivity among forest patches.
  • Wildlife diseases such as white-nose syndrome in bats affect cave/hibernacula species in western Maryland; chronic wasting disease (CWD) in deer requires ongoing surveillance and management; emerging amphibian pathogens can threaten localized populations in cooler headwater systems.
  • High deer densities in suburban and exurban areas cause forest understory loss (hindering native regeneration), vehicle collisions, and landscaping damage; interactions with nuisance geese and mesocarnivores (e.g., foxes, raccoons) are common in urbanized landscapes.
Fun Facts

Did You Know?

Chesapeake oysters once filtered the whole Bay in just days. After big reef loss and disease, the same job now takes about a year—a clear sign of how much reef habitat has shrunk.

Diamondback terrapins (Maryland's state reptile) are built for brackish water: they have specialized salt glands near the eyes that let them excrete excess salt-so they can thrive where rivers meet the sea.

Horseshoe crabs that spawn along Maryland's Atlantic beaches aren't true crabs at all-they're more closely related to spiders and scorpions, and their blue, copper-based blood is used in medical safety testing to detect bacterial contamination.

Chesapeake "sea nettles" (stinging jellyfish) have a hidden life stage: before they're free-swimming jellies, they live as tiny polyps attached to hard surfaces-historically including oyster shells-so changes to oyster reefs can ripple into jellyfish dynamics.

Many "Bay birds" are long-distance commuters: the Baltimore oriole (Maryland's state bird) typically winters in Mexico/Central America and returns to Maryland to breed, meaning the orange-and-black bird in your yard may have traveled thousands of miles since last fall.

Chesapeake Bay (shared with Virginia) is the largest estuary in the United States-an enormous nursery that supports thousands of species, from blue crabs to striped bass and migratory waterfowl.

Maryland is home to the bog turtle (Glyptemys muhlenbergii), the smallest turtle in North America-adults are often only 3-4 inches long and live in spring-fed wetlands.

Maryland's Eastern Shore is part of the core range of the Delmarva fox squirrel (Sciurus niger cinereus), widely recognized as the largest tree squirrel in North America.

The Chesapeake Bay is the single most important spawning and nursery system for Atlantic striped bass ("rockfish") on the U.S. Atlantic coast-multiple major rivers in Maryland (like the Choptank and Patuxent) host key spring spawning runs.

Though Maryland is famous for Baltimore and Annapolis and those cities’ proximity to Washington, D.C., the state is rich in wildlife, especially in the woods and mountains in the west and the eastern shore. Though not as abundant as it once was due to pollution and overfishing, the Chesapeake Bay is one of the world’s great fisheries and a lure for tourists. Have a look at all the Animals in Maryland!

The Official Animal Of Maryland

Maryland doesn’t have an official state animal, but its official state bird is the Baltimore oriole. This small blackbird got its name because the bright orange and black colors of the male’s plumage recalled the coat of arms of the Calvert family, whose head was Lord Baltimore. The females and young males have yellow-orange breasts, grayish heads, and bold white bars on their wings.

Smaller and leaner than an American Robin, the oriole is a sturdy, medium-sized songbird. Baltimore orioles are omnivores and their long, pointed bill is ideal for their diet. They eat primarily insects, fruits, and nectars. They feed high in the trees and are more likely to be heard rather than seen. It also has a baseball team named after it.

Official State Fish: Rockfish Or Striped Bass

Morone saxatilis, like the salmon, is a fish that migrates from the ocean and up rivers to spawn. It has a long, torpedo-shaped silvery body with dark stripes from the gills to the root of its tail. It usually grows close to 3 feet in length and weighs between 20 and 40 pounds, though larger specimens have been caught. The current record in Maryland for a caught rockfish is 67 pounds, 8 ounces, set in 1995.

This rockfish is known for its fighting ability and size. They are challenging to catch but due to declining stocks, there was a suspension placed on harvesting and currently, regulations are in place to ensure their numbers don’t decline again.

Official State Crustacean: Blue Crab

The blue crab is not only the state crustacean but is, famously, the state food. Maryland is famous for the cakes made from the meat of this crab. Unlike many other animals, climate change is thought to benefit the blue crab, as it breeds best in warm water. Its name, Callinectes sapidus, means beautiful swimmer who is also savory. This blue crustacean was named the official state food in 1989.

Blue crabs do well in the brackish waters of the Chesapeake Bay and they are an essential part of the state’s economy. The harvest is very well taken care of and although there is no size limit or requirement for females, there is a legal size regulation for harvesting males.

Official State Mammal

Maryland has three state mammals. They’re the calico cat, the Chesapeake Bay Retriever, and the thoroughbred horse. Calico isn’t a breed but a coat color, and one strange but true fact about calico cats is that they’re almost always female.

The Chesapeake Bay retriever has helped many duck hunters retrieve their prey from the waters of the bay. They were originally bred specifically as water dogs and used to hunt and retrieve ducks in the cold waters of the bay.

The Chesapeake Bay thoroughbred horse is a nod to Maryland’s tradition of horse racing. Thoroughbreds are generally brown, chestnut, black, gray, bay, or bay brown in color. Although white is very rare, it is still a recognized color by the American Jockey Club. This horse is a lighter breed and has an average weight of 900 to 1400 pounds and stands at 5.5 feet (16 hands high).

The Preakness Stakes is a thoroughbred horse race that is held every year in Baltimore. It is always held on the first Saturday in May.

Official State Reptile: Diamondback Terrapin

Diamondback Terrapin

The diamondback terrapin lives in brackish water off the coast of Maryland.

This turtle is named for the attractive diamond pattern on its shell. Their name Terrapin means “little turtle” in Algonquin. Though it’s not a sea turtle, the diamondback terrapin lives in the brackish water off the Maryland coast and can tolerate salt water.

Diamondback Terrapins are not the most friendly and shouldn’t be handled frequently. They have a fierce bite that may call for medical attention. These turtles can grow up to 12 inches and have an average lifespan ranging between 20 to 50 years.

Official State Insect: Baltimore Checkerspot Butterfly

This beautiful little butterfly was named because the pattern of spots on its wings recalled the colors of the Calvert family’s crest. The butterfly actually isn’t that common in Maryland and is actually considered rare or endangered in the state. It was listed as a federally endangered species in 1997.

Because Baltimore Checkerspot butterflies are extreme vulnerability to pesticides, like all butterflies, they have gone down significantly in numbers and are now considered rare in the state.

Where To Find The Top Wild Animals In Maryland

Though Maryland is not a large state, it has over 120,000 acres of wildlife areas. They include South Mountains State Park and Assateague State Park, which is home to a famous herd of feral horses. There’s Catoctin Mountain, Blackwater National Wildlife Refuge, Merkle Natural Resources Management Area, and Deal Island State Wildlife Management Area, where a person can fish and hunt for crabs. The Isle of Wight Department of Natural Resources Management Area is an excellent place to bird watch. There’s also the Patuxent River Park – Jug Bay Natural Area and Idylwild Natural Area, which is home to many species of butterflies.

Visitors to these areas can find:

Bats

Little Brown Bat flying in the forest.

Little Brown Bats are mostly nocturnal.

Bats found in Maryland include myotis bats such as the little brown bat. Mostly nocturnal, they include the big brown bat, the red bat, and the evening bat. They’re found in caves, tree cavities, tunnels, barns, and attics.

Most bats, like the little brown bat, live in caves and mines but will also be found in trees, piles of wood, bat houses, and artificial structures. The majority of bats have an insectivore diet and can eat up to 1,000 mosquitos in one hour. The female brown bat is slightly larger than the male, but on average they weigh less than half an ounce and have a wingspan of 8 to 11 inches.

The red bat is somewhat larger than the brown bat, with a wingspan of up to 13 inches. Their weights are similar, also under half an ounce. These bats prefer to eat mostly moths and beetles but will select larger prey.

Birds

Tiniest Birds-Wilsons Storm Petrel

Wilson’s Storm Petrel (Oceanites oceanicus) in flight over the Atlantic ocean.

Hundreds of species of birds either pass through Maryland on their way to winter or breeding grounds or live in the state year-round. Many of these birds are waterfowl and include grebes, swans, geese, shovelers, teals, wigeons, scaups, eiders, and other types of ducks. There are even flamingos in Maryland.

Wading birds include stilts and avocets, herons, egrets, bitterns, and storks. Maryland also has the beautiful roseate spoonbill and the white ibis. Some seabirds are skuas, gulls, jaegers, shearwaters, terns, and tropicbirds. The yellow-nosed albatross has been seen in Maryland, as have the southern and northern storm petrels. Puffins, murres, dovekies, guillemots, and auks take the place of penguins in the northern hemisphere. Loons give their strange call on Maryland’s lakes and sandpipers, curlews, godwits, and turnstones scurry along the shore poking for food in the mud.

Birds of prey include eagles, ospreys, falcons, vultures, hawks, and kites. The state is home to other bird predators such as the nocturnal owls.

Other types of birds are passerines such as flycatchers, kingbirds, mourning doves, vireos, shrikes, crows, magpies, bluejays, tits, swallows, larks, chickadees, and kinglets. Starlings, wrens, and mockingbirds are also common in Maryland, as are robins, sparrows, bluebirds, finches, and warblers. Cardinals, tanagers, buntings, and their cousin the dickcissel also make Maryland their home.

There are even parrots in Maryland. The one parrot that’s still extant is the Monk parakeet, though scientists do not know if it is wild or feral. It is not native, for its origins are in South America.

Reptiles And Amphibians

A Timber Rattlesnake striking prey

Maryland is home to 27 different types of snakes, the timber Rattlesnake is one of them.

Though Maryland can get chilly in the winter, it does have its share of reptiles and amphibians. Maryland is home to several snakes, including the corn snake, the eastern rat snake, and the common garter snake. Venomous and dangerous snakes found in Maryland are the eastern copperhead and the timber rattlesnake. In total, Maryland is home to 27 different types of snakes.

Besides the diamond terrapin, Maryland’s waters are habitats for species of sea turtles, including one of the rarest, Kemp’s Ridley sea turtle. The Atlantic hawksbill, loggerhead, leatherback, and green sea turtles are also found in Maryland’s part of the Atlantic Ocean.

Other Maryland turtles are the eastern snapping turtle, the eastern mud, musk, box, and painted turtles, the eastern spiny soft-shelled turtle, and the northern red-bellied cooter.

Maryland lizards include skinks, racerunners, and the Mediterranean gecko, which as its name implies, is not native to the state. Like skinks, it is often found around people’s houses.

Amphibians of Maryland are different species of frogs including the carpenter frog, the bullfrog, and the mountain chorus frog. Salamanders are the Jefferson salamander, the northern slimy salamander, the red salamander, mudpuppies, eastern newts, and hellbenders. A few of several toad species are Fowler’s toad, the barking toad, and the American toad.

Predators

Gray fox

The gray fox is stout and has shorter legs than the red fox.

Maryland predators include the coyote, the red and gray fox, and the black bear. Other predators are seals and the bobcat. There are also sharks near Maryland’s coast and beaches.

The gray fox, also known as a paraphyletic fox and not a true fox, is commonly found throughout Maryland, as well as most of the eastern and southern U.S. Stouter, and with shorter legs than the red fox, they weigh between 7 to 13 pounds and have heights of 31 to 44 inches, tail included. The body of this fox is mostly gray, with some reddish tinges throughout. The red fox is the largest of the true foxes, standing at 14 to 20 inches tall and weighing 10 to 31 pounds. They have an average lifespan of 3-4 years and are defined by their reddish-brown fur.

Insects

Bald-faced hornets, despite their name, are actually yellowjackets.

Besides the Baltimore Checkerspot Butterfly, the many many species of insects include common bees, moths, dragonflies and damselflies, beetles, true bugs, ants, cicadas, crickets, katydids, grasshoppers, flies, mantids, mosquitoes, and termites.

The most common species of insect found in Maryland is the Eastern Yellowjacket (Vespula maculifrons). There are two of this genus in the wasp family that are differentiated by their habits and traits, although they both have similar colorings. The eastern yellowjacket prefers to make its nest in the ground but may also be found in basements, attics, and garages.

The Bald-Faced Hornet is another species native to this state and is another yellowjacket. It has different color patterns, very light to white, that are only found on its face and abdomen.

Other Arthropods

Sea spider

Sea spiders are small predators of marine invertebrates.

Other Maryland arthropods include crabs, shrimps, lobsters, and sea spiders. There are millipedes and centipedes, strange, tiny creatures called pauropods, and transparent burrowing symphylans that live in the soil. Unfortunately, there are a variety of ticks and mites, including those that spread disease.

Spiders include black and yellow garden orb-weavers, barn spiders, black widows, jumping spiders, wolf spiders, and brown recluse spiders. There are fishing spiders that live near or even on bodies of water and eat insects, tadpoles, and small fish.

While many of the spiders in Maryland are venomous, the black widow is the only one that is considered dangerous. The venom of other spiders is considered too little to have an effect on people but the black widow requires immediate medical assistance. Not generally found in homes, they prefer basements, garages, and porches. They are not aggressive but when touched, will bite on instinct.

Fish

Snakehead

Snakehead fish are an invasive species in Maryland.

Fish that live in Maryland’s lakes, ponds, streams, and rivers include the American eel, burbots, minnows, herrings, shads and alewives, carp, perches, trout, and trout-perches, pikes, mosquitofish, silversides, whitefish, and catfish. People have been eating the eggs and meat of sturgeons for thousands of years and now those fish are endangered. Snakehead fish are invasive and aggressive predators. They like stagnant or even muddy water, must breathe air, and can live on land for as long as four days if their skin is kept moist.

The saltwater fish of Maryland are plentiful and include bay anchovies, black sea bass, bluefish, Atlantic croakers, and flukes. The ugly but tasty monkfish lives at the bottom of the sea, and the Atlantic needlefish is often found in marinas. Marlin and other billfish are sport fish, and the cownose ray gets its name from the shape of its snout. The sandbar shark is common in the Chesapeake Bay.

Rodents

close up of an eastern chipmunk

The eastern chipmunk is the only chipmunk found in Maryland.

Maryland rodents include the eastern chipmunk, the eastern gray squirrel, the burrowing groundhog, the muskrat, the flying squirrel, and many species of mice and rats, including the marsh rice rat and the all too common house mouse. Beavers are found in Maryland’s freshwater environs, and there are several species of vole, though most aren’t native to the state. The North American porcupine and the nutria are also rodents that make a living in Maryland.

The chipmunk is the only living member of the genus Tamias and the only chipmunk found in Maryland. It has a weight of 2 to 5 ounces and grows between 8 and 10 inches tall. With a lifespan of 3 years in the wild, they have a shorter lifespan than other chipmunks. While their diet consists mostly of slugs, butterflies, worms, and snails, they will snack on the occasional frog and mouse.

Other Mammals

Rabbits also make Maryland their home. They include the snowshoe hare, which famously changes color from gray and brown to white in the winter, the black-tailed jackrabbit, and the Appalachian and eastern cottontail rabbits.

A wealth of marine mammals live off the Maryland coast. They include the short-beaked common dolphin and other dolphin species, beaked whales, sperm whales and pilot whales. Killer whales have also been seen off the coast of Maryland, as have blue, fin, sei, common minke and humpback whales.

Both the striped and eastern spotted skunk are found in Maryland, and mustelids include the American river otter, the mink, the fisher, the American ermine and the least weasel. The opossum, North America’s only marsupial, is common as is the raccoon. There are several species of shrew, including the smoky shrew and the least shrew.

There are two types of extant deer in Maryland. There’s the white-tailed deer, which is ubiquitous and the sika deer. This deer is actually native to east Asia and was introduced. They can be told from white-tailed deer because they keep the spots they had as fawns.

The horses on Assateague Island are feral, which means they’re descended from domestic horses. Once a year they’re rounded up and auctioned off.

Zoos In Maryland

If visitors don’t have time to go to the wildlife areas, they can always visit Maryland’s zoos. They include the Salisbury Zoological Park, the Maryland Zoo in Baltimore, the Plumpton Park Zoo in Rising Sun, and Baltimore’s world-famous National Aquarium.

The non-profit, public National Aquarium, formerly known as the National Aquarium in Baltimore, is located on Pier 3 in the Inner Harbor. There are thousands of species found in award-winning habitats and it is ranked as one of the nation’s top three aquariums.

Wild Animals In Maryland

Maryland is home to many animals that are found in the mid-Atlantic area of the United States. Among them is the West Indian manatee. Though it prefers warmer waters and is considered a vagrant, this rarest of marine mammals has been seen off the Maryland coast. The southern bog lemming is a largely nocturnal, burrowing rodent that likes the loose soil of bogs and forest edges.

The mummichog or mud minnow is a little fish that lives in the Chesapeake Bay and can tolerate a great range of temperatures, high salinity, poorly oxygenated water, and pollution. In 1973, mummichog was part of the cargo of Skylab and was the first fish to go into space. Horseshoe crabs, whose species is about 450 million years old and who are collected for their sapphire blue blood, are visitors to Maryland’s shores.

The Most Dangerous Animals In Maryland Today

Snapping Turtles can deliver hard, nasty bites.

Maryland doesn’t have that many dangerous animals, but ones that a person should respect include:

  • Black bears. These bears can be aggressive, especially if they get used to humans feeding them.
  • Black widow and brown recluse spiders. These spiders are docile, but they will bite if they’re threatened. Their venom is potent enough for a bite to be considered a medical emergency.
  • Timber rattlesnake. This rattler is the only one found in the northeast. Its venom is powerful, but the snake is rather docile. It takes a lot of provocation for it to strike.
  • Snapping turtle. Though these turtles would rather burrow into mud at the bottom of a lake if they’re disturbed, they can still deliver a nasty bite.

While technically not a dangerous animal like others that may come to mind, if disturbed, this turtle has a bite that can cut through bone, and even the babies can cause some damage. However, unless they feel threatened, snapping turtles aren’t likely to harm a person. The snapper is an omnivore, they eat aquatic vegetation, fish, snakes, and other animals. They range in size from 8 to 14 inches and can live more than 40 years.

Native Plants In Maryland

Black-eyed Susan

The black-eyed Susan is the state flower of Maryland – it is, however, native to Missouri as well.

With a popular nickname like The Old Line State, not to mention having the black-eyed Susan as its official flower, Maryland has shown just how much they value its roots. The Maryland meadow beauty is just one of the amazing plants that have made Maryland their home.

This fast-growing Rudbeckia has daisy-like flowers and an ability to self-seed which makes it a great choice for wildflower gardens. While there are 25 species of the Rudbeckia, the black-eyed Susan is the most common. It grows up to 3 feet tall, needs full exposure to the sun, and blooms in the summer and fall.

This state flower is so popular that there is even an award named for it – The Black-Eyed Susan Book Award. Begun in 1992, this award, in the pursuit of literacy and lifelong reading habits, hopes to encourage students to read contemporary literature of quality.

Endangered Animals In Maryland

There are more than 175 animals in Maryland that are either endangered, threatened, or in need of conservation, though attempts are being made to save some of them.

They include:

  • Eastern oyster. Though the conservation status of this animal hasn’t been evaluated, over-harvesting and pollution caused the eastern oyster population to crash. As of 2021, it is one percent of where it was in the 1890s.
  • Bog turtle. This little turtle is critically endangered because of the illegal pet trade and its low reproduction rate.
  • Red-cockaded woodpecker. One of the rarest of the woodpeckers that are only found in the southeastern states, this bird gets its name because of the sliver of red on the male’s head during the breeding season. It’s considered near threatened.
  • Puritan tiger beetle. There are around nine populations of this rather voracious beetle in Maryland, and there is an effort to increase the population.

One of the most rare turtles found in the U.S., the bog turtle has a current number of 2,500 to 10,000. Growing to only 4.5 inches in length, it is the smallest turtle in North America. They inhabit wetlands and bogs and due to several invasive species that can dry out these areas, they are facing a loss of habitat. Because they are extremely sensitive to the effects of global warming, with their needs for a specific habit, erratic weather patterns disrupt this environment.

Rarest Animal In Maryland

One of the rarest specimens in the state is the Maryland Darter fish. Not only rare in the state but thought to be one of the rarest fishes in the world. It is so rare that the IUCN Red List has listed this fish as extinct.

First discovered in 1912, the darter fish is a ray-finned fish found in freshwater, part of the family Percidae. They often grow from 1 to 9 inches, although many of these species do not grow larger than 3 inches. The last known sighting of this fish was in 1988. The darter is so rare because it has certain habitat requirements. It needs highly oxygenated, rapidly moving streams where there are rocky riffles occurring. Due to an increase in population, its habit has lessened.

The Largest Animal In Maryland

Once the home to wolves, elk, and mountain lions, the only large animal now found in Maryland is the black bear. They are located mostly in the counties of Garrett, Washington, Frederick, and Allegany. Because of the breeding population of black beers in these counties, there is a healthy populace. Although they are located in the westernmost counties, it isn’t uncommon to see them in the central parts of the state.

Male black bears weigh around 400 pounds, while females are lighter at 175 pounds. When standing upright, a black bear may be up to 7 feet tall. Bears are most active during the early morning and late evening hours in spring and summer.

Native Trees In Maryland

Sweetbay Magnolia

There are more than 200 species of trees native to Maryland, like this Sweetbay Magnolia.

From Sweetbay Magnolia to Eastern Red Cedar, the native trees in Maryland run the gamut and are each beautiful in their own right. In fact, there are more than 200 species of trees native to Maryland. While we didn’t list all of them, we did round up 12 stunners that are worthy of mention. Explore this list of beautiful trees and plants you’ll find throughout the great state of Maryland.

The Sweetbay Magnolia, while not as messy as the Southern Magnolia, still has a generous amount of beautiful blooms that will drop. This tree will reach over 30 feet in maturity when in warmer climates, and when in colder climates will only reach 10 feet.

The Eastern Red Cedar can grow to a height of 30 to 35 feet. This cedar has dark green leaves in the summer that will change to a reddish-brown in the autumn. They are native to North America, are cold-hearty, and are able to grow in any soil.

The Coldest Place In Maryland

The coldest place in Maryland is considered to be McHenry, which is at the northernmost tip of Deep Creek Lake, with an elevation of 2,800 feet in the Appalachian range and an average winter temperature of 24 degrees Fahrenheit. Located in Garrett County, it is known for having activities year-round and has a reputation for having one of the most beautiful areas on the east coast for skiing, mountain biking, white water rafting, and adventures on and around the lake.

January is generally the coldest time in McHenry, with low temperatures of 19 degrees and highs only reaching to 34 degrees. The current population of McHenry is around 1,750 residents.

Read about:

  • extinct animals that lived in Maryland.
  • the best national parks in Maryland.
  • the types of hawks in Maryland.
  • the best fish to catch in Maryland in the summer.
  • the highest point in Maryland.
  • 12 incredible trees native to Maryland.

Animals Found in Maryland

236 species documented in our encyclopedia

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