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The rook (Corvus frugilegus) is a member of the family Corvidae in the passerine order of birds. It is found in the Palearctic, its range extending from Scandinavia and western Europe to eastern Siberia. It is a large, gregarious, black-feathered bird, distinguished from similar species by the whitish featherless area on the face.
Corvidae is a cosmopolitan family of oscine passerine birds that contains the crows, ravens, rooks, magpies, jackdaws, jays, treepies, choughs, and nutcrackers. [1] [2] [3] In colloquial English, they are known as the crow family or corvids. Currently, 139 species are included in this family.
Hooded crow (Corvus cornix) in flight Jungle crow (Corvus macrorhynchos) scavenging on a dead shark at a beach in Kumamoto, Japan. Medium-large species are ascribed to the genus, ranging from 34 cm (13 in) of some small Mexican species to 60–70 cm (24–28 in) of the large common raven and thick-billed raven, which together with the lyrebird represent the larger passerines.
The origins of the Nachtkrapp legends are still unknown, but a connection possibly exists to rook infestations in Central Europe. Already feared due to their black feathers and scavenging diet, the mass gatherings quickly became an existential threat to farmers and gave rooks and crows their place in folklore as all-devouring monsters.
Perched birds often chatter together, and before settling for the night, large roosting flocks make a cackling noise. Western jackdaws also have a hoarse, drawn-out alarm call, [13] arrrrr or kaaaarr, used when warning of predators or when mobbing them. [41] Nestlings begin making a soft cheep at about a week of age. As they grow, their voice ...
WASHINGTON (Reuters) - -Alcoholic drinks should carry a label warning consumers about their cancer risks, the U.S. Surgeon General said in an advisory on Friday, noting that their consumption ...
Corvus capensis Lichtenstein, MHC, 1823 – Cape crow or Cape rook (east and southern Africa) Corvus frugilegus Linnaeus , 1758 – rook (Eurasia, introduced to New Zealand ) Corvus brachyrhynchos Brehm, CL , 1822 – American crow (the United States , southern Canada and northern Mexico )
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