Rook

A highly social corvid of farmland and open country across Europe, it forms large, noisy breeding colonies, known as rookeries, in the tops of tall trees, and forages on the ground in fields and pasture, probing soil with its long bill for invertebrates. Look for the pale, bare patch of skin at the base of the bill that separates it from similar all-black crows. Late winter into spring, when rookeries are active with nest building and calling, and large post-breeding roosts in autumn and winter, both offer good viewing.