Large-Billed Crow vs American Crow

Large-Billed Crow

Corvus macrorhynchos

Also known as: Thick-Billed Crow

How to recognise a large-billed crow?

General appearance

The large-billed crow, as the name suggests, is notable for its relatively large beak. These crows are generally black, even though a gray or silver sheen may appear over the feathers in bright sunlight. Their eyes are often a stark contrast in a striking shade of white or pale blue.

Male vs female

Sexual dimorphism is less prominent in large-billed crows, making it difficult to distinguish males from females based on physical appearance alone. Both genders share similar coloration and size, although males tend to be slightly larger.

Juvenile

Juvenile large-billed crows resemble adults but tend to have lighter-colored eyes, usually a duller blue or gray. Additionally, juveniles may be identified by the comparatively smaller size of their beaks, which gradually increase as they age.

Size

18.1 - 23.2 in/15.9 - 35.3 oz

Habitat

Primary habitat

The large-billed crow is native to South and Southeast Asia. It prefers tropical climates but can also adapt to various environments like forests, grasslands and human settlements.

Additional range

Sometimes this species extends its range north to the Russian Far East and Japan, likely due to increased availability of food resources.

Range Map

What do large-billed crows like to eat?

Natural diet

The large-billed crow is omnivorous, feeding on a diverse array of natural foods. Its diet primarily consists of insects, small mammals, fruits, grains, and carrion. It is also known to consume eggs and nestlings of other birds. It forages in a variety of habitats, including forests, fields, and urban areas, demonstrating great adaptability in its dietary habits.

Bird feeders

At bird feeders, the large-billed crow is attracted to a range of offerings. It commonly consumes seeds, nuts, and suet. These birds may also take advantage of kitchen scraps, such as bread and meat, provided at feeders. Their adaptable nature allows them to exploit various food sources found around human habitation.

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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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Large-Billed Crow

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American Crow

Large-Billed Crow

Corvus macrorhynchos

Also known as: Thick-Billed Crow

General appearance

The large-billed crow, as the name suggests, is notable for its relatively large beak. These crows are generally black, even though a gray or silver sheen may appear over the feathers in bright sunlight. Their eyes are often a stark contrast in a striking shade of white or pale blue.

Male vs female

Sexual dimorphism is less prominent in large-billed crows, making it difficult to distinguish males from females based on physical appearance alone. Both genders share similar coloration and size, although males tend to be slightly larger.

Juvenile

Juvenile large-billed crows resemble adults but tend to have lighter-colored eyes, usually a duller blue or gray. Additionally, juveniles may be identified by the comparatively smaller size of their beaks, which gradually increase as they age.

Size

18.1 - 23.2 in/15.9 - 35.3 oz

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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 Large-Billed Crow from the American Crow

Visual differences

The Large-Billed Crow, measuring 18-23 inches, has a prominent large beak and can exhibit a gray or silver sheen in sunlight, along with striking pale eyes, often white or pale blue. In contrast, the American Crow is 17-21 inches long, uniformly black with a robust beak, and has a shorter, square-ended tail. Morphological differences like the Large-Billed Crow's size and notably larger beak set it apart visually from the American Crow, which has a consistent black coloration and a fingered wing appearance in flight.

Key differences and behavior

The Large-Billed Crow, native to South and Southeast Asia, adapts to tropical climates and urban areas, while the American Crow thrives in North America's semi-open habitats and urban environments, avoiding deserts. Both exhibit intelligent behaviors and utilize tools. Large-Billed Crows have complex courtship and shared parenting, typically nesting higher in trees, while American Crows involve older young as helpers and nest at varied heights. Both species are omnivorous; however, the Large-Billed Crow often consumes smaller mammals and carrion, while the American Crow's diet leans more towards insects and plant matter. Both species forage in diverse habitats and are drawn to human-provided food. The cooperative breeding and helper system in American Crows is a notable distinction from the simpler pair-focused nesting of Large-Billed Crows.