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A rook skull The rook is a very social bird; in the evenings they gather in large flocks, often in thousands. Rooks are highly gregarious birds and are generally seen in flocks of various sizes. Males and females pair-bond for life and pairs stay together within flocks.
The eastern species is smaller than the western jackdaw, and in eastern adults, the pale areas of the plumage are almost white, whereas in the western bird, these areas are pale grey. The iris is pale in western jackdaw and dark in Daurian jackdaw. The two species are otherwise very similar in shape, calls, and behaviour.
In this list of birds by common name 11,278 extant and recently extinct (since 1500) bird species are recognised. [1] Species marked with a "†" are extinct. Contents
The western jackdaw was one of the many species originally described by Carl Linnaeus in his 18th century work Systema Naturae. [2] Owing to its supposed fondness for picking up coins, Linnaeus gave it the binomial name Corvus monedula, choosing the specific name mǒnēdŭla, which is derived from moneta, the Latin stem of the word "money".
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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.
Compared with the skulls of most other birds, G. newtoni’s skull is quite short. But the jaws are massive, supported by powerful muscles. “They would have had a very wide gape,” McInerney said.
A 69-million-year-old skull found in Antarctica belonged to what scientists say is the oldest known modern bird.. An early relative of the continent’s ducks and geese, it lived off the Antarctic ...