Western jackdaw

Corvus monedula subfamily

Corvinae taxonomy

Corvus monedula Linnaeus, 1758, Sweden. Four subspecies usually recognized.

other common names

French: Choucas des tours; German: Dohle; Spanish: Grajilla Común.

physical characteristics

13.26-15.21 in (34-39 cm); 4.86-9.27 oz (139-265 g). Upper-parts are grayish black with a slight bluish gloss. Head has a black forecrown and dark gray rear crown, nape, and sides. Wings and tail are black and glossy. Underparts are grayish black. The short bill is black, as are the legs and feet.

distribution

Europe, western Asia, North Africa. habitat

Wide variety of open country with trees, including areas of human habitation.

behavior

Sociable groups frequently engage in agile, tumbling flight display, giving loud calls.

feeding ecology and diet

Mainly granivorous, except during breeding season when it takes moth caterpillars from tree foliage.

reproductive biology

Semicolonial. Stick nests built in tree holes, cliff faces, or artificial structures. Generally four eggs April through May. Incubation 17-19 days; fledging about 30 days.

conservation status

Not threatened. Abundant; appears to be spreading broadly north and eastward.

significance to humans

Regularly nests in chimneys of inhabited buildings. ♦

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