26 



THE UNIVERSITY OF THE STATE OF NEW YORK 



Cowbird (continued) 



photographed at the nest. Note the shape of bill that puts it in 

 the blackbird family. 



See cowbird's eggs : In nest of indigo bunting Nu BuI4 



chipping sparrow Nu SpC2 



chipping sparrow Nu SpC3 



field sparrow Nu SpF2 



field sparrow Nu SpF3 



wood thrush Nu TiW2 



veery Nu Ve2 



blue-headed vireo Nu ViB2 



blue-headed vireo Nu ViB3 



red-eyed vireo Nu ViR2 



water-thrush Nu Wf2 



Call no. 



Nu Co4 



Young Bird in Chipping Sparrow's Nest. 

 (1903) 



Onondaga Valley. 

 Bailey 



Note size of bird compared with that of nest. 



Nu Co44 Young Bird in Red-eyed Vireo's Nest. Cardiff. (1909) 



Bailey 



The young vireos have been crowded out of this nest and the 

 cowbird is the sole survivor. Note that the relatively large cow- 

 bird completely fills the nest. 



The red-eyed vireo is frequently selected by the cowbird to 

 incubate its eggs and rear its young. 



This is an unusual site for a red-eyed vireo nest, as an ever- 

 green is seldom selected. 



See also young cowbird in blue-headed vireo's nest Nu ViB4 

 See young cowbird being fed by a female redstart Nu Rf5 

 See young cowbird being fed by a chipping sparrow Nu SpC6 



Nu Co8 Female Cowbird and Three Female House Sparrows Feed- 

 ing on Old Log. Ithaca. (May 6, 1914) Allen 



Cowbirds often associate with flocks of sparrows. Which is 

 the cowbird? 



