ZOOLOGY 



contains numerous small, mostly brilliantly colored birds, 

 which migrate. Although a few of .them- -like the red- 

 start, the Maryland yellow-throat (Fig. 271), the redpoll 

 warbler, the chestnut-sided warbler, and the yellow war- 

 bler- - are abundant, few of the thirty -five or forty Eastern 



. l'(>it. - - Brown creeper 

 ( Ccrithia familiar if) . 



FIG. 270. -- House-wren (Troylodyt.es aedon). 



species can be said to be commonly known except to 

 careful observers of birds ; for during the migrations 

 they hide in thickets, and are extremely shy. 



The Vireonidae include the vireos, or greenlets, bright, 

 handsome, and exclusively American birds. The com- 



