A
Species Profile

Australorp Chicken

Gallus gallus domesticus

Black sheen, brown eggs, calm charm
Ton Ponchai/Shutterstock.com

Australorp Chicken Distribution

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Origin Location

This map shows the native origin of the Australorp Chicken. As a domesticated species, they are now found worldwide.

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Found in 1 country

Size Comparison

Human 5'8"
Australorp Chicken 1 ft 10 in

Australorp Chicken stands at 32% of average human height.

Chicken have red comb. Black australorp rooster stand on a wooden floor and background bare plaster or loft style.

At a Glance

Domesticated
Also Known As Australian Orpington, Aussie Orpington
Diet Omnivore
Activity Diurnal+
Lifespan 4 years
Weight 4.5 lbs
Status Not Evaluated
Did You Know?

Australorps were developed in Australia from Black Orpington stock, selected heavily for egg production.

Scientific Classification

Australorp is an Australian-developed breed of domestic chicken known for calm temperament and strong egg-laying performance, originally derived from Black Orpington lines and selected in Australia.

Kingdom
Animalia
Phylum
Chordata
Class
Aves
Order
Galliformes
Family
Phasianidae
Genus
Gallus
Species
Gallus gallus

Distinguishing Features

  • Medium-to-large, heavy-bodied dual-purpose chicken (eggs and meat)
  • Commonly solid black plumage with green iridescence (especially in the classic Black Australorp)
  • Single comb and red wattles/earlobes typical of many domestic chicken breeds
  • Generally docile, hardy, and noted for prolific laying in many strains

Physical Measurements

Males and females differ in size

Height
2 ft (1 ft 10 in – 2 ft 4 in)
1 ft 5 in (1 ft 3 in – 1 ft 7 in)
Length
2 ft (1 ft 10 in – 2 ft 4 in)
1 ft 8 in (1 ft 6 in – 1 ft 10 in)
Weight
9 lbs (7 lbs – 11 lbs)
7 lbs (6 lbs – 7 lbs)
Tail Length
9 in (7 in – 12 in)
6 in (4 in – 7 in)
Top Speed
9 mph
Walks and short flights

Appearance

Primary Colors
Secondary Colors
Skin Type Feathered domestic chicken (Gallus gallus domesticus); heavy-bodied, soft-to-medium tight feathering. Typically white skin beneath feathers; shanks often slate/dark in black/blue varieties. Single comb-more frostbite-prone in cold/wet climates.
Distinctive Features
  • Domestic chicken breed (not a wild species): an Australian-developed production type derived from Black Orpington lines, intensively selected in Australia.
  • Heavy, broad, deep-bodied (dual-purpose build) with a relatively low, well-rounded carriage compared with the leaner wild-type red junglefowl form.
  • Reputation for exceptional egg-laying for a heavy breed (noted historically for very high annual production), while still having substantial table weight.
  • Calm, steady temperament; often described as docile and manageable-distinct from more flighty or aggressive domestic lines.
  • Single comb (upright, medium-to-large) with red wattles/face; clean legs (unfeathered shanks).
  • Black variety hallmark: very glossy, beetle-green sheen over the entire body; tail carried full with a smooth transition from back to tail in quality birds.
  • Common care notes: provide adequate roost space for a heavy breed, non-slippery surfaces to protect feet/legs, and shade/ventilation in heat (dark plumage absorbs heat).
  • Cold-weather care: single comb and wattles can be susceptible to frostbite-use dry, draft-free housing and consider protective measures in severe winters.
  • Australorps can get overweight if overfed or kept from roaming. Very heavy layers sometimes have prolapse or egg-binding. Dense feathers need regular mites and lice checks and control.

Sexual Dimorphism

Typical chicken sexual dimorphism: males are larger and more ornamented (comb, wattles, hackle/saddle feathers, and tail sickles), while females are rounder-bodied with smaller head furnishings. Both sexes share the breed's heavy type and (in black variety) iridescent sheen, but it is usually more dramatic in males.

  • Larger frame with more upright posture and more prominent breast/shoulders.
  • Larger, taller single comb and longer wattles; more vivid red facial skin.
  • Long, arched sickle tail feathers; more pronounced iridescent green sheen on black plumage.
  • Pointed hackle and saddle feathers (more flowing neck and back feathering).
  • More rounded, blocky body profile; fuller abdomen typical of strong layers.
  • Smaller single comb and wattles; generally less exaggerated head furnishings.
  • Shorter tail with less dramatic sickle development; sheen present but often subtler than in males.
  • Often appears broader and deeper through the body relative to height (production hen silhouette).

Did You Know?

Australorps were developed in Australia from Black Orpington stock, selected heavily for egg production.

The classic variety is glossy black with a green sheen-often most visible in sunlight on the hackles and tail.

They're a "dual-purpose" breed: valued for both eggs and a substantial, meaty body type.

Australorps are widely regarded as gentle and people-tolerant, making them popular in backyard flocks.

Like other Gallus gallus domesticus breeds, they retain junglefowl ancestry-scratching, dust-bathing, and strong social peck-order instincts.

Their egg color is typically light to medium brown, and many hens lay reliably through much of the year under good management.

Unique Adaptations

  • Productivity selection: compared with the base species' wild-type reproduction, Australorps have been intensively selected for sustained, high-rate laying in domestic settings.
  • Heavy-bodied efficiency: a broad, deep body supports dual-purpose utility; good feed and space management helps prevent excess weight.
  • Dark, iridescent plumage: the black-green sheen can aid feather durability and is a hallmark look that distinguishes many Australorp lines.
  • Cold tolerance (with caveats): their ample feathering can help in cooler climates, but single combs remain vulnerable to frostbite in severe cold without dry, draft-free housing.
  • Docility under domestication: selection for calm temperament makes them easier to integrate into mixed flocks and manage in smallholder/backyard systems.

Interesting Behaviors

  • Calm flock manners: Australorps are often less flighty than lighter egg breeds, tending to stay composed during routine handling and coop checks.
  • "Foraging vacuum" scratching: they vigorously rake soil and litter with alternating feet-classic domestic chicken behavior inherited from red junglefowl ancestors.
  • Dust-bath dedication: they create shallow "bowls" in dry soil or sand and work dust through feathers to manage skin oils and external parasites.
  • Orderly social life: they establish a stable pecking order; a confident, even-tempered hen often becomes a quiet flock leader.
  • Roosting preference: despite their heavy build, they seek secure roosts at dusk; providing appropriately sized, low-to-moderate perches helps prevent injuries.

Cultural Significance

Australorps (Gallus gallus domesticus) are a symbol of Australian poultry breeding. Bred from British Orpingtons into a top egg layer, they are a black, family-friendly bird popular in backyards and farm shows.

Myths & Legends

Show-ring lore tells of "the black hen that outlaid them all," a common Australian smallholder story celebrating Australorps as near-magical providers through hard seasons.

A frequently repeated naming tale links "Australorp" to national pride-an 'Australian Orpington' reborn-reflecting how breeders framed the bird as both imported-in-origin and distinctly Australian in achievement.

Old farmyard superstition in parts of the English-speaking world holds that glossy black chickens bring household luck and protection-an idea readily attached to Australorps because of their green-sheened plumage.

Historical anecdote (often told as legend): early 20th-century productivity trials made certain Australorp lines famous, and retellings sometimes exaggerate totals into folklore-like "unbeatable" records shared among poultry keepers.

Conservation Status

NE Not Evaluated

Has not yet been evaluated against the criteria.

Population Stable

Life Cycle

Birth 10 chicks
Lifespan 4 years

Lifespan

In the Wild
2–8 years
In Captivity
5–12 years

Reproduction

Mating System Polygyny
Social Structure Managed Domestic
Breeding Pattern Seasonal
Fertilization Internal Fertilization
Birth Type Internal_fertilization

Australorp (Gallus gallus domesticus) shows polygyny: one rooster mates many hens (often managed ~1:8–12). Fertilization is by cloacal “kiss”; hens can store sperm. No long pair bonds. Bred from Black Orpington for eggs and calmness; not very broody.

Behavior & Ecology

Social Flock Group: 8
Activity Diurnal, Matutinal, Vespertine
Diet Omnivore High-protein treats such as mealworms (or other insect larvae), alongside scratch grains like cracked corn in small amounts

Temperament

Calm, docile, and generally people-tolerant; often less skittish than many chicken breeds, making handling and cooperative flock management easier (breed distinction).
Socially cohesive but still hierarchy-driven; may deliver short, low-level pecks/chases during rank disputes, especially around feed/nest boxes (species-typical).
Good confinement tolerance relative to more active/light breeds, but benefits from daily enrichment and foraging opportunities to reduce boredom-related feather pecking (care requirement).
High laying tendency (breed hallmark) can increase resource use and social competition for preferred nest boxes; providing multiple nest sites reduces crowding and bullying (care requirement).
Health/care-linked behavior notes: prone to weight gain if overfed (reduced activity in confinement), may show heat-stress sensitivity in hot climates-panting, wing-spreading, seeking shade; ensure ventilation, shade, and cool water (breed-relevant management).
Generally steady with children/novice keepers; individual variation exists-some lines are more assertive, and roosters can be protective or territorial depending on handling and genetics (variation).

Communication

Soft contact clucks and murmurs used during foraging and group cohesion Common across chickens; often frequent in calm Australorp flocks
Food calls (short, repetitive clucks) that recruit flockmates to desirable items; may be given by dominant hens and roosters.
Alarm calls: sharp, high-pitched notes for aerial threats and harsher, lower calls for ground threats; triggers freezing, sprinting to cover, or clustering.
Egg song/cackle after laying; can be prominent in high-producing hens Breed context: strong layer, so frequent laying-associated calls
Rooster crowing (if present): territorial and time-of-day signaling; increases at dawn and with perceived challenges.
Broody/chick calls (if brooding occurs): low, rhythmic clucks to gather chicks and warning growls when disturbed.
Visual postures: head/neck elevation, direct stare, and approach angles signal dominance; submissive birds sidestep, crouch, or retreat Pecking order mechanics
Threat and de-escalation displays: feather ruffling, wing-droop, short rushes; fights are usually brief in well-managed Australorp flocks but can escalate with crowding.
Spatial signaling: claiming preferred roost bars and nest boxes; birds queue or displace others based on rank-more pronounced when roost/nest space is limited Care-relevant
Tactile behaviors: allopreening and close roosting for social bonding; broody hens use body sheltering to regulate chick temperature.
Ritualized feeding interactions: tidbitting (especially by roosters) and ground-scratching demonstrations that coordinate group foraging.
Scent is minimal; communication is primarily vocal/visual/tactile, with dust-bathing and preening serving both maintenance and social synchronization; flockmates often dust-bathe and forage together.

Habitat

Biomes:
Tropical Rainforest Tropical Dry Forest Savanna Desert Hot Mediterranean Temperate Grassland Temperate Forest Temperate Rainforest Boreal Forest (Taiga) Alpine Wetland +5
Terrain:
Plains Hilly Valley Plateau Coastal Island Riverine +1
Elevation: Up to 9842 ft 6 in

Ecological Role

Human-managed omnivorous ground-forager (small invertebrate predator + seed/plant consumer) in farmyard and backyard ecosystems

Reduces local insect and invertebrate populations (pest control) Converts mixed plant/animal food waste into eggs/meat Manure production that can be composted to build soil fertility (nutrient cycling) Light soil disturbance via scratching that can aid residue breakdown (may also damage seedlings if unmanaged)

Diet Details

Main Prey:
Insects Earthworm Slugs and snails Spider Small invertebrates Small vertebrates
Other Foods:
Seeds and grains Commercial poultry feed Green plant matter Leafy vegetables and garden greens Legumes Fruits and berries Kitchen scraps Grit and minerals Fermented feeds or sprouted grains +3

Human Interaction

Domestication Status

Domesticated

Australorp is a domesticated chicken (Gallus gallus domesticus) developed in Australia from Black Orpington stock in the early 1900s. Breeders selected for high egg production, calm behavior, and a dual-purpose body. It is a standardized breed known for exceptional laying, tame nature, and efficient feed use for eggs on small farms.

Danger Level

Low
  • Minor injuries from pecking or scratching (more likely during handling or if birds are startled)
  • Rooster aggression if kept (spurs and chasing can cause cuts/bruises; many areas restrict roosters)
  • Zoonotic/pathogen exposure primarily via fecal-oral routes (e.g., Salmonella, Campylobacter) from improper hygiene or coop sanitation
  • Respiratory irritation/allergy from dust, dander, litter, and ammonia in poorly ventilated coops

As a Pet

Suitable as Pet

Legality: Generally legal where backyard poultry is permitted; regulated by local city/HOA ordinances (limits on hen numbers, coop setbacks) and commonly prohibits roosters in urban/suburban areas. Some regions require permits, registration, or disease-control compliance (e.g., avian influenza restrictions).

Care Level: Easy

Purchase Cost: $5 - $80
Lifetime Cost: $900 - $3,500

Economic Value

Uses:
Eggs (high-producing layer) Meat (dual-purpose; backyard/smallholder) Breeding stock (heritage/standard breed lines) Education/hobby farming (4-H, homesteading)
Products:
  • table eggs (often brown eggs; egg color varies by strain but typically tinted/light brown)
  • spent-hen meat (stewing/slow-cook applications common)
  • fertile hatching eggs and day-old chicks
  • manure for compost/fertilizer (managed to reduce pathogen risk)

Relationships

Related Species 9

Domestic chicken
Domestic chicken Gallus gallus domesticus Shared Species
Red junglefowl Gallus gallus Shared Species
Grey junglefowl Gallus sonneratii Shared Genus
Sri Lankan junglefowl Gallus lafayettii Shared Genus
Green junglefowl Gallus varius Shared Genus
Common pheasant Phasianus colchicus Shared Family
Indian peafowl
Indian peafowl Pavo cristatus Shared Family
Grey partridge Perdix perdix Shared Family
Japanese quail Coturnix japonica Shared Family

Ecological Equivalents 5

Animals that fill a similar ecological role in their ecosystem

Orpington Gallus gallus domesticus Closest niche analogue in backyard poultry: a heavy, dual-purpose breed that is generally docile and performs well in cold weather. The Australorp was developed from Black Orpington stock with stronger selection for egg-laying consistency.
Plymouth Rock
Plymouth Rock Gallus gallus domesticus Occupies a similar small-farm niche: dual-purpose for meat and eggs, hardy and calm. Often compared for productivity and temperament in mixed backyard flocks.
Rhode Island Red
Rhode Island Red Gallus gallus domesticus Plays a similar role as a productive brown-egg layer for homesteads. Typically more assertive than Australorps but overlaps in management and output expectations.
Sussex Gallus gallus domesticus Comparable heritage dual-purpose chicken used in backyard systems. Exhibits similar foraging behavior and general hardiness.
Leghorn Gallus gallus domesticus Occupies a similar egg-production niche but represents the lighter, more flighty, more feed-efficient layer type, compared with the Australorp's heavier, dual-purpose type.

The Australorp chicken was once one of the most popular chickens in the world. This Australian breed was crafted from Black Orpington chickens crossed with a variety of other breeds to increase egg production to the max. By the 1920s, Australorp hens were indeed outproducing all the other birds. They set one world record after another, and demand for the breed exploded.

Australorps were exported to multiple countries where, sadly, they proved to be a bit of a disappointment. For whatever reason, they did not produce as well in other parts of the world as they had in Australia, and so their popularity began to quickly fade. Today, these chickens are still among the best egg producers one can find, averaging about 250 to 300 eggs each year at their peak. Their popularity is once again increasing, thanks in large part to their friendly and easygoing nature and their quiet and calm presence in backyard flocks.

Incredible Australorp Chicken Facts

  • Australorp chickens are an Australian breed created in the 1890s.
  • They come from Orpington chickens crossed with other birds from all over the world.
  • Australorps are only recognized in black plumage in the United States.
  • Hobbyists who prefer quiet birds would do well to choose Australorp chickens.
  • These chickens are friendly and docile, and they make good show birds.
  • Australorp hens are often culled when their egg production diminishes.

Where to Find Australorp Chickens

Australorp chickens are uniquely Australian. They were bred in Australia from Black Orpington chickens, which originated in England. Orpingtons were named for the town in which they originated. These hybrids were created around 1886. A breeder named William Cook crossed a mix of large, meaty birds, including Minorcas from Spain, Plymouth Rocks from the United States, and Langshans from China. He aimed to develop a new line of birds with excellent meat and egg-laying qualities. On both counts, Cook’s efforts succeeded.

Australians imported Black Orpington chickens from England beginning around 1890. They crossed the birds with Rhode Island Reds from the United States and White Leghorns from Italy. They made further crosses with Minorcas, Plymouth Rocks, and Langshans, too. The resulting Australian Black Orpingtons, or eventually, Australorps, had a truly international heritage.

As record-setting egg layers, Australorps were in high demand in the 1920s. Importers brought them to the United States, England, South Africa, Canada, and Mexico. Their popularity declined over time, possibly because hobbyists preferred more colorful poultry, but they are on their way back.

Scientific Name

The Australorp chicken shares the same scientific name with all of the other domesticated chickens in its ancestry. These birds are known as Gallus gallus domesticus. They descended, primarily, from the Red Junglefowl of Southeast Asia.

The common name of the Australorp chicken was a matter of contention for some time. Throughout the 1920s, breeders fought over the official name of these birds. Some suggestions included Australian Utility Black Orpingtons, Australian Laying Orpingtons, and simply Australs. Most agreed that the name should include at least some reference to the chicken’s origins, both the breed that it came from and the place where it was created.

Breeders and judges reached a compromise. They chose Australorp as the name of this new breed. The Austral- prefix, of course, honored Australia, where the chicken was first bred. And the -orp suffix paid homage to the Orpington, from which the new breed primarily descended. In 1929, with the name agreed upon and the breed standards confirmed, the Australorp was officially accepted into the American Poultry Association Standard of Perfection.

Australorp Chicken Appearance

Australorp chickens are medium to large birds. The hens weigh approximately 6.5 pounds, and the roosters average about 8.5 pounds. Bantam sizes are considerably smaller, weighing between about 24 to 42 ounces. They stand with a tall and erect posture, holding their tail upright and their head above their tail. They have full and rounded breasts with a robust and active appearance overall.

Australorp chickens have single, straight, bright red combs. The combs have up to seven points and are upright and evenly serrated. They also have bright red wattles and red faces with large brown eyes and oblong earlobes. They have a strong, slightly curved beak that fades from black to off-white near the tip. Australorps have black to slate-colored legs and feet with four toes. Their feet feature white toenails and pinkish-white soles.

Australorp Plumage

In the United States, the American Poultry Association officially recognizes only black Australorp chickens. Their sleek, black feathers are closely placed and should be shiny with a green or purple iridescent sheen in the sunlight. Males have long hackles and long, curved sickle feathers, while the hens have tails of medium length with full, broad feathers. Both have medium-sized wings that do not droop and minimal fluff.

The Australian Poultry Standard recognizes three colors. These include the traditional black, as well as white and blue. South African officials recognize seven colors, including black, white, blue, wheaten laced, splash, golden, and buff.

A black Australorp hen with broad tail feathers forages in the tall grass.

Behavior

Despite their relatively large size, Australorps generally behave in a docile and friendly manner. They are among the quietest chickens currently inhabiting backyard flocks. Breeders say that they are gentle and calm, and that even the roosters do well with children. They are easy to train and make good show birds. Australorps get along with most other chicken breeds, but they tend to get bullied by more aggressive birds. Some owners suggest keeping them separated from unfriendly or pushy breeds.  

Australorps do not fly well. Their medium-sized wings are not strong enough to carry their large and heavy bodies long distances through the air. They are tolerant of confinement and just as happy to free range. They will do equally well in enclosed runs as in open yards, but they definitely need a clean and secure coop for roosting and nesting.

Australorp chickens, particularly those with black feathers, do not do as well in hot climates as in cooler regions. If you plan to raise these birds in hot weather, make sure to provide plenty of shade, lots of fresh water, and maybe even a fan to keep their coop well-ventilated.

Diet

Australorps need a diet high in protein and calcium. They are among the best egg-laying chickens available. However, that high rate of production must be supported with adequate nutrients so that the eggs don’t come out soft-shelled or otherwise defective. As such, owners should provide high-quality commercial chicken feed as the main source of food for these birds.

If allowed to range freely, Australorps are great foragers. They can easily supplement their diet by eating weeds, seeds, and other green plant parts. They also eat insects, larvae, worms, and other invertebrates. These chickens also sometimes catch and eat mice, lizards, or even small snakes.

Australorps are curious and friendly birds that are highly motivated by treats. Owners may choose to further supplement their diet with treats like leafy greens, mealworms, bits of meat, or fruits and vegetables. They should also consider offering extra calcium from crushed oyster shells or other sources. But remember that this breed is prone to obesity if it is overfed, so keep treats to a reasonable level.

Reproduction

Let’s talk about eggs! In the 1920s, Australorp chickens in Australia established consecutive world records for egg production. One bird produced 364 eggs over a 365-day period. Today, Australorp chickens average between about 250 and 300 eggs per year. Hens begin laying at about five to six months of age, and they lay medium to large eggs. The eggs usually appear light brown in color.

Australorps, like most other chickens, lay most proficiently when they are young. By the time an Australorp hen is a couple of years old, she may be laying up to seven eggs per week. But just a few years later, her numbers might drop to just one or two eggs each week.

Despite early attempts to breed out the broodiness from Australorp chickens, hens today do tend to go broody. They are content to sit on their nests. The eggs generally hatch after about 21 days. After that, the hens become attentive mothers who take good care of their chicks.  

Predators

Predators such as foxes, weasels, and raccoons can pose threats to Australorp chickens both on the ground and at the nest. Birds of prey, such as hawks and owls, might have a tougher time taking adult, full-size Australorps, but chicks or bantam-sized birds would be at risk. Animals such as domestic cats or snakes could easily prey on chicks or eggs in the nest if owners do not keep the coops secure.

Australorp roosters provide a good defense for their flock. These attentive birds watch carefully over their hens as they forage. With their large size and upright, alert appearance, these roosters can often discourage predators from approaching. Despite their friendly and docile behavior toward humans and other chickens, Australorp roosters will put up a fight if their flock is threatened.

Lifespan & Conservation

Australorp chickens live a little longer than many other breeds. These chickens live 6 to 10 years on average, but individuals can live much longer under the right conditions. Unfortunately, because owners often raise Australorps for their egg production, many hens are culled as their numbers decline.  

Australorp chickens were in highest demand around the 1920s, when hens were setting egg-laying records year after year. They were exported from Australia to countries around the world. Since then, however, their popularity has waned. They were not able to produce in the same quantities in other parts of the world, whether due to climate differences or other factors. Other chicken breeds proved to be better egg producers, and the popularity of Australorp chickens rapidly declined.

Today, thanks to continued popularity in their native Australia and increased interest from hobbyists in other countries, the Australorp is no longer listed on the Livestock Conservancy’s Conservation Priority List, having graduated from the list in 2023. That means that although the breed was once listed in one of the endangered categories, its population has increased sufficiently that it is no longer considered at risk by the Livestock Conservancy. Australorps are still being monitored, and conservation efforts are still encouraged, but things are looking up again for the breed.

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Sources

  1. Rare Breeds Survival Trust / Accessed June 21, 2023
  2. American Poultry Association Breeds and Varieties / Accessed June 22, 2023
  3. The Australorp Club of Australia / Accessed June 22, 2023
  4. Livestock Conservancy / Accessed June 20, 2023
Tavia Fuller Armstrong

About the Author

Tavia Fuller Armstrong

Tavia Fuller Armstrong is a writer at A-Z Animals where her primary focus is on birds, mammals, reptiles, and chemistry. Tavia has been researching and writing about animals for approximately 30 years, since she completed an internship with the U.S. Fish and Wildlife Service. Tavia holds a Bachelor’s Degree in Biology with a wildlife emphasis from the University of Central Oklahoma. A resident of Oklahoma, Tavia has worked at the federal, state, and local level to educate hundreds of young people about science, wildlife, and endangered species.
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Australorp Chicken FAQs (Frequently Asked Questions)

Australorp chickens are robust birds. They stand with a tall and erect posture, holding their tail upright and their head above their tail. They have full and rounded breasts. Their single, straight, bright red combs have up to seven points, and are upright and evenly serrated. They also have bright red wattles and red faces with large brown eyes and oblong earlobes. They have a strong, slightly curved beak that fades from black to off-white near the tip. Australorps have black to slate colored legs and feet with four toes. Their feet feature white toenails and pinkish-white soles. Most Australorp chickens are black with shiny feathers that have a green or purple sheen. This is the only color recognized in the United States. Black, blue, and white variations are recognized in Australia, and additional colors are recognized in South Africa.