Rooks are a similar size to crows with a wingspan of around 90cm. Look out for noisy rookeries in treetops. The grey beak and face is a giveaway sign of a rook. Rooks are a similar size to crows with a wingspan of around 90cm.

Is a Rook a raven or a crow?

Rooks differ from crows by a pale, straighter bill with a bare grey bill base. They display 'feathery trousers' on their legs and have an oily, loose plumage compared to crows. However, young rooks have fully feathered faces so can be mistaken for crows.

Are crows called rooks?

rook, (Corvus frugilegus), the most abundant Eurasian bird of the crow family Corvidae (q.v.). It resembles the carrion crow in size (45 cm [18 inches]) and in black coloration, but the adult rook usually has shaggy thigh feathers and has bare white skin at the base of its sharp bill.