Winifred Austen - Bird Series 5214
The Rook. - Corvus Frugiligus Frugiligus (Linn.) buulds its nest in the rookery in tree tops. The nest, usually high up in an Elm or other tall trees, consists of sticks and mud lined with grass and wool and hair. The Rook lays three to six eggs, greenish, mottled with olive brown. Length 19"