Behaviour
The Rook is generally gregarious and the Crow solitary, but Rooks occasionally nest in isolated trees, and Crows may feed with Rooks; moreover, Crows are often sociable in winter roosts. The most distinctive feature is the voice. 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.
The Carrion Crow is noisy, perching on the top of a tree and calling three or four times in quick succession, with a slight pause between each series of croaks. The wing-beats are slower, more deliberate than those of the Rook.
Like all Corvids, Carrion Crows are highly intelligent, and are among the most intelligent of all animals.
Read more about this topic: Carrion Crow
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