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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.
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.
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).
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 )
For species found in the 50 states, Puerto Rico, and the U.S. Virgin Islands, the taxonomic treatment (designation and sequence of orders, families and species) and nomenclature (common and scientific names) used in the list are those of the AOS, the recognized scientific authority on the taxonomy and nomenclature of North and Middle American birds.
When will the geomagnetic storm occur? A storm watch is in effect for Dec. 31. CMEs travel several million miles per hour, so the NOAA predicts that the best time to see the lights would be ...
The Cape crow or black crow (Corvus capensis) is slightly larger (48–50 cm in length) than the carrion crow and is completely black with a slight gloss of purple in its feathers. It also has proportionately longer legs, wings, and tail, and has a much longer, slimmer bill that seems to be adapted for probing into the ground for invertebrates .