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Brief Summary

    Corvidae: Brief Summary
    provided by wikipedia

    Corvidae is a cosmopolitan family of oscine passerine birds that contains the crows, ravens, rooks, jackdaws, jays, magpies, treepies, choughs, and nutcrackers. In common English, they are known as the crow family, or, more technically, corvids. Over 120 species are described. The genus Corvus, including the jackdaws, crows, rooks, and ravens, makes up over a third of the entire family.

    Corvids display remarkable intelligence for animals of their size and are among the most intelligent birds thus far studied. Specifically, members of the family have demonstrated self-awareness in mirror tests (European magpies) and tool-making ability (e.g., crows and rooks), skills which until recently were thought to be possessed only by humans and a few other higher mammals. Their total brain-to-body mass ratio is equal to that of non-human great apes and cetaceans, and only slightly lower than that of humans.

    They are medium to large in size, with strong feet and bills, rictal bristles, and a single moult each year (most passerines moult twice). Corvids are found worldwide except for the tip of South America and the polar ice caps. The majority of the species are found in tropical South and Central America, southern Asia and Eurasia, with fewer than 10 species each in Africa and Australasia. The genus Corvus has re-entered Australia in relatively recent geological prehistory, with five species and one subspecies there. Several species of raven have reached oceanic islands, and some of these species are now highly threatened with extinction or have already gone extinct.

    Brief Summary
    provided by Ecomare
    Crows are often noisy and bold. That is why they tend to have a bad name. However, they are very social birds. Crows often form partners for life, which you can readily pick out in large groups. Pairs usually walk side by side and keep a close watch on one another. In addition, crows have an extensive vocabulary and often score high on intelligency tests. According to some scientists, they are smarter than apes.

Comprehensive Description

Distribution

    Distribution
    provided by EOL authors

    Birds in the family Corvidae inhabit every content except Antarctica.