Rook

A large, gregarious crow and a characteristic bird of European farmland. Adults are distinguished by a peaked head and a patch of bare, grey-white skin at the base of the bill. Rooks live in open country with scattered tall trees, where they gather in noisy, traditional nesting colonies. They are residents across much of Europe, though northern populations move south in winter.

Rooks are highly gregarious and are rarely seen alone. They forage in large groups on pastures and ploughed fields. They use powerful bills to dig for larvae and grain. Their social life is complex. Hundreds of stick nests may be crowded into a small group of trees. Their call is a flat 'kaaa,' which is more nasal than the deep 'caw' of a Carrion Crow.