BIRD OF THE WEEK / WEEK 10: March 5, 2018

© Liron Gertsman

Bird

Northwestern Crow

Species Name

Corvus caurinus

Appearance

33-41 cm length | 77-86 cm wingspan | 250-550 gm weight

A large, stout passerine bird with a strong, thick, slightly curved bill, a long, squared tail and strong legs. It is almost identical to the American crow but averages marginally smaller.

Glossy black allover with an iridescent sheen. Their eyes, bill, legs, and feet are black.

Habitat / Behaviour

Omnivore | Urban, coast | Non-migratory | Lives 7-9 years

The northwestern crow has a limited range, but like all crows is highly adaptable and can be found in almost any habitat including woodlands, coasts, and well developed urban environments.

The northwestern crow has a natural coastal diet of fish, shellfish, and crab. It will carry mussels into the air, dropping them on the pavement of rocks below to break them open. They will also take insects and other invertebrates, fruit, eggs, and the hatchlings of other birds.

Crows are considered to be among the world’s most intelligent animals, rivalling some apes. Tool use and even tool construction has been observed in controlled experiments and in the wild. Crows work together in flocks and will mob other birds or animals that pose a threat.

The genus name corvus is latin for “raven”. A group of crows is called a “murder”.

Breeding

Monogamous | Tree nester | 3-6 greenish eggs | 1 brood