CORVIDE—CROWS. 3 121 
ROOK. / 
Corvus frugilegus Zz. 
Adult : Forehead, sides of face chin and upper throat bare 
of feathers ; rest of plumage black, glossed with blue; bill and 
legs black ; irides dark brown. Length 17°5 to 20 inches ; 
culmen 2°1; wing 12 to 12°75 ; tail 6°5 ; tarsus 2. 
Young: Similar toadults but duller and less glossy above ; 
region round the base of the bilk feathered. Frequently young 
birds show a spot or a few feathers of white on the chin, but 
not in all cases. In this stage the rook may be distinguished 
from C. corone by a much slenderer br11. 
Distribution : Generally distributed in most parts of the 
Western Palearctic region, extending eastward into India. 
Habitat: Cultivated regions. Gregarious. 
CARRION CROW. ef 
Corvus corone zzz. 
Adult: Entire slumage black, above beautifully glossed with 
green and purple; under parts also glossed, but to a less 
extent ; zostrils covered by bristly feathers ; bill stouter than 
in C. frugilegus, legs and feet black; irides brown. Length 
17 to 18 inches; culmen,2; wing 12 to 13 inches; tail 8; 
tarsus 2°3. 
Young: Similar, but lack the gloss of the adult. 
Distribution: Inhabits most of the Western Palearctic 
region except where replaced by C. cornix, ranging into India 
and China. 
Habitat : Cultivated and wooded regions, usually solitary 
in habits. 
HOODED CROW. W 
Corvus cornix nn. 
Adult : Head, throat and centre of chest J/ack, glossed with 
