246 VERTEBRATES : BIRDS. 



When a fish comes within reach, it instantly transfixes 

 it with its sharp bill, and afterwards swallows it whole, 



Fig. 129. 



Great Blue Heron, A . herodias, Linn. 



It also feeds upon reptiles, mice, and young birds. When 

 wounded, it at once prepares for defence, and the dog or 

 man who comes within reach is sure to receive a severe 



