The carrion crow was, until recently, considered to be a race of the same species as the hooded crow (Corvus cornix), but it is now recognised as a separate species (7). It is the same size and shape as the hooded crow, but differs in that the plumage is entirely black, with a green and bluish-purplish gloss (2). The thick black bill has a curved tip (2). Vocalisations are croaky and harsh, and somewhat 'harder' than those of the hooded crow (2); the name 'crow' is imitative of their calls (5).
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