Torresian Crow vs American Crow

Torresian Crow

Corvus orru

Also known as: Australian Crow, Papuan Crow

How to recognise a Torresian crow?

General appearance

The Torresian Crow (Corvus orru) is a large black bird with a slightly curved bill and black feathers that may display a bluish-purple sheen in direct sunlight. Its eyes are stark white or grey, surrounded by a ring of bare skin, a prominent feature. They are approximately 50-55cm in length, with a wingspan of around 1 metre.

Male vs female

There is little sexual dimorphism within the Torresian Crow species. However, males are typically slightly larger than females, but this difference is subtle and can be difficult to discern in the wild.

Juvenile

Juvenile Torresian Crows resemble adults but their eyes are blue-grey at the initial stage. The plumage is slightly duller and lacks the adult's sheen. The bill of a juvenile crow is typically shorter and the bare skin around their eyes develops as they mature.

Size

18.9 - 20.9 in/15.2 - 24.7 oz

Habitat

Primary habitat

The Torresian crow inhabits a wide range of habitats including forest edges, woodlands, grasslands, and mangroves mainly in Northern and Eastern Australia.

Additional range

This crow species is capable of inhabiting urban areas. It has adapted well to a variety of climates, from the tropics to temperate regions.

Range Map

What do Torresian crows like to eat?

Natural diet

The Torresian crow is an omnivorous bird that includes a wide range of food sources in its natural diet. It primarily feeds on insects, small mammals, and eggs. This crow also consumes a variety of plant matter such as seeds, berries, and fruits. It often forages on the ground for invertebrates, carrion, and discarded human food.

Bird feeders

While the Torresian crow is not a frequent visitor to bird feeders, it may occasionally be attracted to them, particularly if they offer fatty or energy-rich foods. These crows may consume suet, peanuts, and other nuts, as well as any available fruit pieces. Additionally, they might scavenge for various bird seed mixes, although this is less common.

What does a Torresian crow sound like?

The Torresian crow, a common Australian bird, has a deep, resonant "ark-ark-ark" or "aw-aw-aw" call that’s distinctive and can go on for several seconds. These crows are clever mimics and their vocalizations may also include a range of noises, including human speech, if trained. Their songs, however, aren't as melodious and typically consist of longer sequences of the same raspy caw, often used to communicate with each other over distance.

Call

Audio by 7575u

/ CC BY-SA 4.0

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American Crow

Corvus brachyrhynchos

How to recognise an American crow?

General appearance

The American Crow is a bird measuring 17-21 inches, or 43-53 centimeters, in length. It is easily identifiable by its complete black pigmentation and robust beak. Characteristic tail is rather short, ending in a shape close to a square when not in flight. In flight, the wings take a broad, fingered yet rounded shape. This species is noticeably larger compared to other members of the blackbird family.

Male vs female

Males and females are monomorphic, meaning they share similar appearances. Both sexes show the same strong all-black coloration from beak to feet and also share the same size, making it difficult to differentiate between them based on visual characteristics alone. They are both larger than other members of the blackbird family.

Juvenile

Juvenile crows bear a resemblance to the adults but can be identified by their slightly different voices and shapes. However, as they mature, these differences become less recognizable, and they assume full characteristics of the adults.

Size

16.9 - 20.9 in/11.1 - 20.3 oz

Habitat

Primary habitat

The American crow favors semi-open habitats, including farms, fields, and woodlands. It particularly thrives in the Pacific Northwest shores.

Additional range

While the crow avoids hot deserts, it has adapted to live in an array of environments consisting of towns and even cities, often nesting in city parks.

Range Map

What do American crows like to eat?

Natural diet

The American crow is omnivorous, feeding on a wide variety of natural food sources. Its diet includes insects, spiders, snails, earthworms, frogs, small snakes, shellfish, and carrion. Additionally, crows consume garbage, eggs, and the young of other birds, as well as plant-based foods like seeds, grains, berries, and fruit.

Bird feeders

At bird feeders, American crows may consume various offerings that include unsalted peanuts, sunflower seeds, and corn. They are also attracted to suet, oats, and any leftover scraps or pieces of fruits and vegetables that are available.

What does an American crow sound like?

The American crow is known for its familiar "caw-caw" or "caa-caa" vocalizations. Its call patterns are simple, flat, and falling in nature. Additionally, the crow produces a rattle-like sound that is raucous and immediately recognizable. These vocalizations form the fundamental linguistic component of the American crow's communication.

Call

Audio by Jonathon Jongsma

/ CC BY-SA 3.0

Call

Audio by Richard E. Webster

/ CC BY-NC-SA 4.0

Call

Audio by Richard E. Webster

/ CC BY-NC-SA 4.0

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Torresian Crow

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American Crow

Torresian Crow

Corvus orru

Also known as: Australian Crow, Papuan Crow

General appearance

The Torresian Crow (Corvus orru) is a large black bird with a slightly curved bill and black feathers that may display a bluish-purple sheen in direct sunlight. Its eyes are stark white or grey, surrounded by a ring of bare skin, a prominent feature. They are approximately 50-55cm in length, with a wingspan of around 1 metre.

Male vs female

There is little sexual dimorphism within the Torresian Crow species. However, males are typically slightly larger than females, but this difference is subtle and can be difficult to discern in the wild.

Juvenile

Juvenile Torresian Crows resemble adults but their eyes are blue-grey at the initial stage. The plumage is slightly duller and lacks the adult's sheen. The bill of a juvenile crow is typically shorter and the bare skin around their eyes develops as they mature.

Size

18.9 - 20.9 in/15.2 - 24.7 oz

There's more to learn about Torresian Crow

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American Crow

Corvus brachyrhynchos

General appearance

The American Crow is a bird measuring 17-21 inches, or 43-53 centimeters, in length. It is easily identifiable by its complete black pigmentation and robust beak. Characteristic tail is rather short, ending in a shape close to a square when not in flight. In flight, the wings take a broad, fingered yet rounded shape. This species is noticeably larger compared to other members of the blackbird family.

Male vs female

Males and females are monomorphic, meaning they share similar appearances. Both sexes show the same strong all-black coloration from beak to feet and also share the same size, making it difficult to differentiate between them based on visual characteristics alone. They are both larger than other members of the blackbird family.

Juvenile

Juvenile crows bear a resemblance to the adults but can be identified by their slightly different voices and shapes. However, as they mature, these differences become less recognizable, and they assume full characteristics of the adults.

Size

16.9 - 20.9 in/11.1 - 20.3 oz

There's more to learn about American Crow

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How to tell the Torresian Crow from the American Crow

Visual differences

The Torresian Crow is larger, at 19-21.5 inches with a wingspan of about 39 inches, while the American Crow is 17-21 inches. The Torresian displays a bluish-purple sheen on its black feathers, and has striking white or grey eyes with bare skin, whereas the American Crow has uniformly black feathers and dark eyes. The Torresian Crow's bill is slightly curved, compared to the robust, straight bill of the American Crow. Juveniles of both species resemble adults but have slightly different eye colors and less sheen in their plumage.

Key differences and behavior

The Torresian Crow and American Crow exhibit distinct behavioral differences. Torresian Crows, found in Northern and Eastern Australia, are habitual creatures, often returning to familiar territories and adeptly working in groups to steal food. In contrast, American Crows, primarily in semi-open habitats of North America, form large family groups involving multiple generations, with young crows assisting with family duties before breeding. Both species are omnivorous, but Torresian Crows are opportunistic foragers and occasionally visit bird feeders, whereas American Crows have a broader diet, often scavenge garbage, and frequent bird feeders more often. Breeding-wise, Torresian Crows form long-term bonds and nest in tall trees, adapting to urban areas, while American Crows involve previous offspring as helpers in nesting efforts and construct large nests high in trees or shrubs. While both adeptly adapt to urban environments, their social structures and nesting strategies vary significantly.