3S' 



AVES 



The blue-birds, robins and the thrushes {Fam. Turdidae) are 

 important enemies of insects and worms. Robins are a bit injurious 

 to cherries, since the dietary change offered by these (acid) fruits is 

 so welcome to them. The chickadee {Fam. Paridae) is an extremely 

 important enemy of insects, including aphids (plant-lice) and canker 

 worms. 



Fig. 196. J, kingbird. B, wood thrush. C, chimney swift. D, horned lark. 

 (Courtesy of Slingerland-Comstock Publishing Co.) 



The crows and jays {Fam. Corvidae) number over two hundred 

 species. They eat fruits, insects, seeds and the eggs and young of 

 other birds. 



The king-bird., the phoebe and the fly-catchers, crested and least 

 {Fam. Ty7~annidae),2iX^ all extremely important insect destroyers. 



