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(vertebrate zoology)
A family of large birds in the order Passeriformes having stout, long beaks; includes the crows, jays, and magpies.



a family of birds of the order Passeriformes. The birds are of medium and large dimensions (up to 65 cm in length) with powerful beaks and claws. They have nostrils covered with trichoid feathers (adult rooks are an exception) and straight tails, which are either rounded or stepped. Some members of Corvidae (magpies, tropical magpies, and jays) have very long tails. The plumage is thick and in many species has a metallic luster. There are more than 100 species. They are distributed widely and found everywhere but Antarctica, New Zealand, and certain ocean islands. Their haunts are varied and include forests, steppes, deserts, mountains, and populated areas.

Usually members of Corvidae nest in separate pairs and less frequently in colonies. They are monogamous. They build their nests in trees or bushes, on rocks, and on the roofs of buildings. They lay three to eight speckled eggs once a year in early spring. Most species are roosting and migratory birds. They are omnivorous. Some members of Corvidae are useful as exterminators of murine rodents and harmful insects; others are harmful and damage crops (corn and sunflowers, for example) or destroy the eggs and fledglings of other birds. In the USSR there are 17 species, including the Alpine chough, raven, crow, jackdaw, rook, chough, Siberian jay, magpie, and jay.


Ptitsy Sovetskogo Soiuza, vol. 5. Edited by G. P. Dement’ev and N. A. Gladkov. Moscow, 1954.


References in periodicals archive ?
Future studies assessing the susceptibility of the closely related hooded crow (Corvus cornix) to WNV may also prove to be insightful, as this is the more predominant corvid species in eastern and southeastern Europe, where WNV is more common.
certain pines) dispersed by scatter-hoarding corvids (i.
1) is robust to errors in species identification (Erkamo, 1990)--I only assumed that corvids had been correctly separated from raptors.
Mark, who also works as an undertaker and Lisa, a lollypop lady, developed a passion for corvids - members of the crow family - after finding a bird with a broken wing at a nature reserve two years ago.
quinquefasciatus, humans, and dead corvids with selected risk factors including distance to CSO streams and catch basins, land cover, median household income, and housing characteristics.
The Mentality of Crows: Convergent Evolution of Intelligence in Corvids and Apes.
The WNV reservoir and most isolates were from birds, especially crows and other corvids showing that most isolations were identified from bird-feeding Culex spp.
Modern ethologists who focus on animal cognition argue with much convincing evidence for deliberate, reflective strategizing in chimpanzees, orangutans, dogs, wolves, dolphins, and corvids.
The chalk downs are awash with cowslips and leaping lambs, with ancient anthills and the throaty caw of the corvids nesting in the highest trees they can find since the English Elm has been brought low.