114 SOME SUGGESTIONS FOB BIRD STUDY. 



type, throughout the whole year. Their chief diet consists 

 of crane fly larvae ("leather jackets"), wireworms, chafer 

 grubs, etc., and the young are fed chiefly on suchlike fare. 

 The young hatch early in April. 



Fig. 35. Heads of Rook (above) and Carrion Crow (below). 



Nest in trees, composed of sticks lined with fibrous roots, 

 bulky. Eggs four or five, nearly two inches long, light 

 greenish blue, spotted brownish. 



The rook should be identified in the fields by means of 

 the naked patch under the bill (Fig. 35) . 



