B
Species Profile

Blackburnian Warbler

Setophaga fusca

Look up for the fire-throat
Joel Trick/Shutterstock.com

Blackburnian Warbler Distribution

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Found in 45 locations

Blackburnian Warbler

At a Glance

Wild Species
Also Known As Blackburn's Warbler, Blackburnian
Diet Insectivore
Activity Diurnal+
Lifespan 2.3 years
Weight 0.011 lbs
Status Least Concern
Did You Know?

Adult males' throat and face are vivid orange bordered by bold black-and-white-one of the brightest patterns among Setophaga warblers (useful for quick ID in the canopy).

Scientific Classification

A small North American wood-warbler (family Parulidae) best known for the adult male’s vivid orange throat and face with bold black-and-white patterning; a long-distance migrant.

Kingdom
Animalia
Phylum
Chordata
Class
Aves
Order
Passeriformes
Family
Parulidae
Genus
Setophaga
Species
Setophaga fusca

Distinguishing Features

  • Adult male: fiery orange throat/face with black mask and strong white wing bars
  • Often forages high in the canopy, especially in conifers
  • Thin, high-pitched warbler song; frequently heard above eye level
  • Females/immatures: yellowish to orange wash on throat/face with grayish upperparts and wing bars

Did You Know?

Adult males' throat and face are vivid orange bordered by bold black-and-white-one of the brightest patterns among Setophaga warblers (useful for quick ID in the canopy).

Size is tiny: about 11-12 cm long and ~0.008-0.011 kg in mass (roughly the weight of 2 nickels), yet it completes long-distance migrations.

Breeding habitat is strongly tied to mature conifer or mixed forests; nests are typically placed high in trees, often on horizontal conifer branches well out from the trunk.

Feeding style is "canopy gleaning": it hunts insects high in the treetops, frequently probing needles and leaves and also making short aerial sallies to snap flying prey.

Typical clutch size is 3-5 eggs; incubation is about 12-13 days, and nestlings fledge in roughly 9-12 days (timing varies by latitude and conditions).

Winter range centers on northern South America, especially along Andean forested slopes (e.g., Colombia-Ecuador-Peru-Venezuela), making it a classic Nearctic-Neotropical migrant.

Within the Parulidae (wood-warblers), it's famous among birders for being easier to hear than see-its song often gives it away from high above.

Unique Adaptations

  • High-canopy specialization: morphology and behavior suited to foraging on fine branch tips and needle clusters where many insects concentrate.
  • Conspicuous male throat patch ("signal" plumage): the bright orange throat/face contrasts sharply with black-and-white patterning, likely aiding mate attraction and species recognition in dim forest canopies.
  • Long-distance migratory physiology: like many wood-warblers, it builds substantial fat reserves pre-migration to fuel multi-night flights between continents.
  • Foraging versatility: combines foliage gleaning, hover-gleaning, and aerial sallies-useful in structurally complex conifer and mixed forests.
  • Cryptic nesting: female's more subdued coloration and nest siting high on conifer branches reduce detectability to predators in dense foliage.

Interesting Behaviors

  • Canopy-first foraging: spends much of the day in the upper forest strata, often >10 m above ground, moving rapidly branch-to-branch while gleaning arthropods.
  • Mixed-species flocking (especially on migration and wintering grounds): may join other small insectivores to improve predator detection and feeding efficiency.
  • Sally-gleaning: alternates between picking prey from foliage/needles and short flights to capture insects in midair.
  • Territorial singing on the breeding grounds: males sing persistently from high perches to defend territories in mature conifer/mixed stands.
  • Nest placement strategy: a small, well-camouflaged open cup, commonly on conifer limbs, helps conceal eggs and chicks against needles and branches.

Cultural Significance

The Blackburnian Warbler (Setophaga fusca) is a canopy warbler with a bright orange throat seen in spring migration. It breeds in mature conifer and mixed forests and winters in Andean forests, linking northern and Neotropical mountain conservation.

Myths & Legends

Name origin (18th century natural history): the common name honors Anna Blackburne, an English naturalist and collector; early naturalists used her collection and correspondence in describing and popularizing the bird in Europe and North America.

The Blackburnian Warbler (Setophaga fusca) is called "fire-throat" or "canopy flame" by birders because the male's bright orange throat seems to glow high in the treetops.

Historical anecdote in art/nature study: the species became a familiar subject in classic North American ornithology and illustration traditions, where its striking throat patch was highlighted as one of the most dramatic warbler field marks.

Conservation Status

LC Least Concern

Widespread and abundant in the wild.

Population Decreasing

Protected Under

  • United States: Migratory Bird Treaty Act (1918)
  • Canada: Migratory Birds Convention Act (1994)

Life Cycle

Birth 4 chicks
Lifespan 2 years

Lifespan

In the Wild
0.1–8.9 years
In Captivity
0.2–10 years

Reproduction

Mating System Monogamy
Social Structure Socially Monogamous
Breeding Pattern Seasonal
Fertilization Internal Fertilization
Birth Type Internal_fertilization

Blackburnian Warbler (Setophaga fusca) forms seasonal pair bonds (social monogamy). Males sing and defend territories; females choose mates. Pairs raise one brood (clutch 3–5, usually 4). Incubation ~12–13 days; nestlings ~8–10 days; parents feed fledglings ~2+ weeks. No helpers.

Behavior & Ecology

Social Flock Group: 2
Activity Diurnal, Nocturnal, Matutinal
Diet Insectivore Caterpillars (moth and butterfly larvae), especially during the breeding season when adults provision nestlings primarily with soft-bodied arthropods.
Seasonal Migratory 3,728 mi

Temperament

Strongly territorial during the breeding season (males defend song territories; aggression includes singing counters, chases, and displacement) (Curtis et al., Birds of the World).
Active, canopy-oriented insectivore; typically restless, rapid-moving forager that gleans and sallies in outer foliage, which shapes generally low tolerance for close conspecific spacing while feeding (Curtis et al., Birds of the World).
Outside breeding, Blackburnian Warblers are more likely to get along with other birds in mixed-species flocks; this Parulidae joining behavior changes with how much food and danger from local predators.

Communication

Primary advertising song Male): a very high, thin series of notes that typically accelerates toward the end; used for mate attraction and territory defense (Curtis et al., Birds of the World
Alternate song types/variants occur within individuals and among populations; song output peaks around dawn during the breeding season Matutinal song 'dawn chorus' pattern common across wood-warblers) (Curtis et al., Birds of the World
Contact call: sharp 'chip'/'tsip'-type notes used at close range during foraging and movement through cover Curtis et al., Birds of the World
Agitation/alarm notes given near nest, fledglings, or predators; often higher rate and harsher quality than contact notes Curtis et al., Birds of the World
Visual signaling: conspicuous adult male orange throat/face and contrasting black-and-white pattern function in sexual and social signaling; posturing and short pursuit flights are used in territorial disputes Curtis et al., Birds of the World
Behavioral displays: wing/tail flicks and oriented body postures during close interactions; threat escalation typically proceeds from song to approach to chase Curtis et al., Birds of the World
Spatial communication: territory placement and repeated song posts convey occupancy; spacing between singing males structures local breeding social organization Curtis et al., Birds of the World

Habitat

Coniferous Forest Deciduous Forest Forest Rainforest Woodland Plantation Suburban +1
Biomes:
Temperate Forest Boreal Forest (Taiga) Tropical Rainforest
Terrain:
Mountainous Hilly Plains
Elevation: Up to 9842 ft 6 in

Ecological Role

Canopy insect predator (insectivorous songbird) in boreal/northern temperate forests and montane forests on migration/wintering grounds.

Regulates forest arthropod populations (including defoliating caterpillars) via predation Transfers energy from canopy arthropods to higher trophic levels (serves as prey for raptors and nest predators) Minor seed dispersal when consuming small berries during migration/winter

Diet Details

Main Prey:
Caterpillars Moths and butterflies Beetle Flies and midges True bugs Ant Wasps and bees Spider Small winged insects +3
Other Foods:
Small berries and soft fruits

Human Interaction

Domestication Status

Wild

Blackburnian Warbler (Setophaga fusca) is fully wild and has no history of being kept or bred by people. People mostly watch or study it (banding, migration monitoring). Threats include habitat loss, collisions with buildings or towers, free-roaming cats, pesticides, and light pollution. Size ~11–13 cm long, 20–22 cm wingspan, 8–11 g; lives at least 11 years.

Danger Level

Low
  • Minimal direct physical risk (small songbird; no venom, negligible bite/scratch hazard).
  • Low zoonotic risk typical of wild birds if handled (e.g., potential exposure to Salmonella/Campylobacter/avian ectoparasites), mainly relevant to rehabilitators/researchers using poor hygiene or inadequate PPE.
  • Indirect risk is primarily to the bird from humans (window strikes, cats, habitat alteration), not to humans.

As a Pet

Not Suitable as Pet

Legality: Blackburnian Warbler (Setophaga fusca) cannot be kept as a pet without permits: in the US (MBTA), Canada, and EU/UK it is usually protected and only allowed for licensed rescue, research, or teaching.

Care Level: Expert Only

Purchase Cost:
Lifetime Cost: $2,000 - $15,000

Economic Value

Uses:
Ecotourism/recreation Ecosystem services Scientific research and monitoring
Products:
  • Birdwatching/ecotourism value (spring migration and boreal breeding-season birding; contributes to local nature-tourism spending rather than a direct commodity).
  • Ecosystem service: insect predation (insectivorous diet; potential local benefits in forest pest suppression, though not typically monetized at a species-specific level).
  • Research value: indicator species in migration and forest/boreal habitat studies; contributes to banding station datasets and long-term population monitoring.

Relationships

Predators 8

Sharp-shinned Hawk
Sharp-shinned Hawk Accipiter striatus
Cooper's Hawk
Cooper's Hawk Accipiter cooperii
Merlin Falco columbarius
Peregrine Falcon
Peregrine Falcon Falco peregrinus
Blue Jay
Blue Jay Cyanocitta cristata
American Crow Corvus brachyrhynchos
Red Squirrel
Red Squirrel Tamiasciurus hudsonicus
Domestic cat
Domestic cat Felis catus

Related Species 8

Blackpoll Warbler
Blackpoll Warbler Setophaga striata Shared Genus
Bay-breasted Warbler Setophaga castanea Shared Genus
Yellow-rumped Warbler Setophaga coronata Shared Genus
Magnolia Warbler
Magnolia Warbler Setophaga magnolia Shared Genus
Black-throated Green Warbler Setophaga virens Shared Genus
Cape May Warbler Setophaga tigrina Shared Genus
American Redstart Setophaga ruticilla Shared Genus
Common Yellowthroat
Common Yellowthroat Geothlypis trichas Shared Family

Ecological Equivalents 4

Animals that fill a similar ecological role in their ecosystem

Cerulean Warbler Setophaga cerulea Similar niche: Blackburnian Warbler (Setophaga fusca) is a long-distance migrant that breeds in mature forests, forages high in the canopy, and gleans insects from leaves. Size about 11–13 cm, wingspan 19–22 cm, mass 8–11 g.
Cape May Warbler Setophaga tigrina Similar niche in boreal and mixed conifer forests. Both commonly feed in spruce and fir canopy and can track outbreaks of canopy insects (notably budworms) during the breeding season; both are long-distance migrants to the Neotropics.
Black-throated Green Warbler Setophaga virens Overlapping breeding habitat and foraging mode. Both use coniferous and mixed forests, frequently forage from the mid- to upper-canopy, and consume similar prey (Lepidoptera larvae, other insects, and spiders).
Golden-crowned Kinglet
Golden-crowned Kinglet Regulus satrapa Ecological analog (non-warbler): a tiny canopy and outer-branch arthropod gleaner in conifer forests. Overlaps strongly with Blackburnian Warbler in foraging substrates (needles and twig tips) and prey type (small insects and spiders), especially in boreal conifers.

Quick Take

The Blackburnian warbler is a common songbird found in the western hemisphere, especially in North America. Although it is rarely seen in Europe, there have been sightings along the west coast. Despite being found mostly in the Americas, the Blackburnian warbler was named after Anna Blackburne, an English botanist. The name of the genus, Setophaga, comes from the Ancient Greek words ses, “moth”, and phagos, “eating.

A detailed educational infographic about the Blackburnian Warbler including bird illustrations, a migration map from North to South America, and biological facts.
Weighing less than a single ounce, this fiery-throated marvel conquers a transcontinental migration that defies its tiny size. © A-Z Animals

Blackburnian Warbler Amazing Facts

  • They’re the only warbler in North America with an orange throat.
  • Males are highly territorial and will chase each other through the forests.
  • As Blackburnian warblers get older, they may forage in groups with other species of birds.

Where To Find Blackburnian Warbler

The Blackburnian warbler is a highly migratory bird. This means that there are no year-round populations anywhere in the western hemisphere they call home. Instead, they will spend their breeding season in the northern region of the United States and the southern region of Canada. During their non-breeding season in the cooler months of the year, they migrate into Central and South America, where they can be found in Panama, Colombia, Venezuela, and along the Andean slopes of Peru and Ecuador. 

Outside of these areas, the best area and time to find the Blackburnian warbler is in the migratory period. Here, you will be able to see them in Central America as well as in the midwestern and eastern United States as they make their way either north or south. 

Nests

There’s not a lot known about the Blackburnian warbler nests. While this is in part due to their migratory behavior, it is mostly because of their nesting habitats. The Blackburnian warbler prefers to nest in dense, secluded forests on the tops of high trees. This can make it difficult to observe their nesting behaviors in the wild. 

What is known about their nests, however, is the overall shape and material. They have cup-shaped nests towards the ends of branches that are constructed out of twigs, branches, and similar materials. The insides are lined with softer materials, such as moss, grass, and pine needles. It is suspected that females build the nests. 

Classification and Scientific Name

The Blackburnian warbler has the scientific name of Setophaga fusca. Their genus name is of Greek origin, while their species name is Latin for ‘dusky’ or ‘dark’. Its class is Aves, and its family is Parulidae. 

Size, Appearance & Behavior

Blackburnian Warbler

Female blackburnian warblers build the nests, and they are the main ones responsible for incubating the eggs.

©pcnorth/Shutterstock.com

The Blackburnian warbler, like other similar songbirds, is a small, thin bird. They can grow to be anywhere from 4.3 to 4.7 inches long, and they can weigh as little as 0.3 to 0.4 ounces. Their wingspan ranges from 7.9 to 9.1 inches, making it around double their length.

As far as coloration and appearance go, it can be hard to miss these striking birds when they come into view. Males have a black and white body. Their face and neck are a brilliant, bright orange with black markings. Females tend to have more of a brown or tawny coloration along their bodies, with a yellow head and no markings. Juveniles, including males, resemble females before maturing. 

Migration Pattern and Timing

One of the main things that Blackburnian warblers are known for, other than their bright colors, is their migratory patterns. Blackburnian warblers have no year-round populations. During their breeding seasons in the warmer months, they can be found in the northeastern region of the United States and the southeastern region of Canada. During migration, they can be seen along the midwestern and eastern United States as well as in Central America. Then, during the cooler months of non-breeding, they can be spotted in South America.  

Diet

This small bird is almost entirely insectivorous, which means it eats mostly insects. However, what prevents the Blackburnian warbler from being entirely insectivorous is that it may also supplement its diet with berries as needed and desired. This is most common in the wintertime.

Their diet is one reason that it is not common to see blackburnian warblers at or around bird feeders with other types of passerines. Rather than the seeds that are typically common at bird feeders, the Blackburnian warbler is more drawn to high-protein food such as mealworms, since they have carnivorous tendencies. 

What does the Blackburnian warbler eat?

During their breeding months in the summer in the north, blackburnian warblers will mainly focus on insects. One of the largest components of their diet during this time is the larvae of moths and butterflies. There was one study that found that 98 percent of the Blackburnian warbler’s breeding diet consisted of insects, with the rest consisting of spiders. 

As mentioned above, during their winter months in the south, Blackburnian warblers may eat berries when available. 

Predators and Threats

Whether as adults or as eggs, many different types of animals prey on the Blackburnian warbler. This includes large birds of prey and even some types of mammals.

However, these aren’t the only threats to the Blackburnian warblers.

Like many other types of passerine, the blackburnian warbler has been greatly impacted by habitat loss. This is especially true in their breeding territory, where they rely on certain types of forests to create their nests and raise their young. 

What eats the Blackburnian warbler?

As mentioned above, both large birds of prey and mammals prey on the Blackburnian warbler. This can include bluejays, squirrels, sharp-shinned hawks, and Cooper’s hawks.

Reproduction, Babies, and Lifespan

Both the male and female offer a brief courtship display when it comes time to mate in the warmer months of their breeding season. Females will crouch and display their wings and tails with small, fluttering motions. Males, however, will take to the skies with an aerial courtship display. As passerines, they can also use songs to find their perfect mate.

A single brood can consist of anywhere from 3 to 5 eggs. These eggs are light greenish or white and can have brown markings on them. 

Female blackburnian warblers build the nests, and they are the main ones responsible for incubating the eggs. Both parents will take part in raising the hatchlings, from feeding to teaching them to fly later on. 

The oldest Blackburnian warbler was around 8 years old. It is more typical to see them live to be anywhere from 3 to 6 years old, however. Hatchlings remain in the nest for around 2 to 4 weeks. They then become independent from their parents after several months. Despite this, however, they will not reach maturity until around one year of age. 

Population

Despite the threats that they may face, the Blackburnian warbler is listed as a species of Least Concern. They have an estimated global population of 13 million. However, while they may be thriving globally, local populations or populations in certain areas may be declining due to humans and natural threats. 

The Blackburnian warbler population is most at-risk in their breeding areas in Canada. These small songbirds have a highly specific area that they choose to breed and live in. They require tall, dense forests with high levels of privacy. As these forests continue to disappear to make room for urbanization and other reasons, it becomes more difficult for Blackburnian warblers to find the resources necessary to breed and lay eggs. This, as a result, can begin to wear away at the population over time, especially since it can take a year or two after a successful brood for more adults to emerge and continue to grow the population. 

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Sources

  1. SORA / Accessed January 24, 2023
Megan Martin

About the Author

Megan Martin

Megan is a writer at A-Z Animals where her primary focus is birds, felines, and sharks. She has been researching and writing about animals for four years, and she holds a Bachelor of Arts in English with minors in biology and professional and technical writing from Wingate University, which she earned in 2022. A resident of North Carolina, Megan is an avid birdwatcher that enjoys spending time with her cats and exploring local zoological parks with her husband.

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Blackburnian Warbler FAQs (Frequently Asked Questions)

Yes, they do migrate. In the cooler winter months, they live in South America. During their transitionary periods, they can be found in Central America and the United States. Lastly, in the breeding season, they settle in Canada and the northernmost United States.

View Blackburnian Warbler Photos