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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.
The type species is the common raven (Corvus corax); [11] others named by Linnaeus in the same work include the carrion crow (C. corone), hooded crow (C. cornix), rook (C. frugilegus), and two species which have since been moved to other genera, the western jackdaw (now Coloeus monedula) and the Eurasian magpie (now Pica pica).
The position of the star lies less than 1° away from the north celestial pole, making it the current northern pole star. The stable position of the star in the Northern Sky makes it useful for navigation. [17] As the closest Cepheid variable its distance is used as part of the cosmic distance ladder.
The genus contains 50 species: [1] Corvus splendens Vieillot, 1817 – house crow or Indian house crow (Indian subcontinent, Southeast Asia, Middle East, eastern Africa); Corvus moneduloides Lesson, RP, 1831 – New Caledonian crow (New Caledonia)
This is a list of the fastest flying birds in the world. A bird's velocity is necessarily variable; a hunting bird will reach much greater speeds while diving to catch prey than when flying horizontally. The bird that can achieve the greatest airspeed is the peregrine falcon (Falco peregrinus), able to exceed 320 km/h (200 mph) in its dives.
As a massive winter storm is rolling through regions of the United States on Monday, see pictures of snow from across the Midwest and East Coast. Winter storms: From sledding to shoveling, see ...
The rook has a high-pitched kaaa, but the crow's guttural, slightly vibrant, deeper croaked kraa is distinct from any note of the rook. [10] The carrion crow is noisy, perching on a vantage point such as a building or the top of a tree and calling three or four times in quick succession, with a slight pause between each series of croaks.