Rook, Corvus fiugilegus. Resident and winter visitor, but scarce in north-west Scotland. Found generally over agricultural land with small woods.
DESCRIPTION: 19 inches. Sexes alike. Note purple gloss. Where 3 has tight breeches. Rook has ‘plus-fours'. 3 has sloping. Rook has steep, forehead; bill looks longer and thinner. Confusion most likely between 3 and young Rooks which have no white patch on face.
VOICE: Typical caw less hoarse than 2 and 3. Many notes heard at rookeries and roosts.
HABITS: Feeds mainly on ground, walking about slowly. Rather fast flapping flight and soaring evolutions common. Social throughout life. Accompanied in many districts by 5.
MAY BE CONFUSED with 3, 5.