370 HOMING WITH THE BIRDS 



Cowbird egg walled in the 

 bottom of sparrow nest 



credit except the exter- 

 mination of a few grass- 

 hoppers, to which the 

 lark and bobolinks could 

 effectively attend in its 

 absence. When I recall 

 that in my own experi- 

 ence in photographically 

 reproducing the life his- 

 tory of one of these birds, 

 I offered incontroverti- 



every flock of cowbirds 

 in existence. Here, 

 again, it is sentiment of 

 the most foolish and 

 disastrous kind, which 

 will protect a bird of no 

 value in any way on 

 earth, a songless bird of 

 disgusting habits, with 

 absolutely nothing to its 



Red-eyed vireo's nest that lost 

 two eggs jot the cuic-bird's one 



Indigo finch nest where 

 cowbird destroyed two eggs in 

 placing one, 



ble proof that she killed 

 three masked warblers, 

 two red-eyed vireos, and 

 one blue finch, I feel 

 amply justified in de- 

 manding her execution, 

 as well as that of her 

 tribe, spending their 

 lives in similar disastrous 

 work. If each female of 



