554 Field Museum of Natural History — Zoology, Vol. IX. 



The Field Museum collection contain nests and eggs of the follow- 

 ing species in which one or more eggs of the Cowbird have been 

 deposited : 



Scarlet Tanager (2 nests), Song Sparrow (5 nests), Yellow War- 

 bler (3 nests), Bobolink, Bell's Vireo, Red-eyed Vireo, and Maryland 

 Yellow-throat. The late Captain Charles Bendire in his Life Histories 

 of North American Birds gives a list of 91 different species in whose 

 nests Cowbird's eggs have been found, including among them — 

 Mourning Dove, Yellow-headed Blackbird, Kingbird, and, strange to 

 say. Red-headed Woodpecker. 



Genus XANTHOCEPHALUS Bonap. 



225. Xanthocephalus xanthocephalus (Bonap.). 

 Yellow-headed Blackbird. 



Distr.. Western North America, from Indiana, Illinois, and Wis- 

 consin west to the Pacific coast, north to British Columbia and south 

 to Mexico; accidental on the Atlantic coast. 



Adult male: Whole head, neck, and breast, orange yellow; chin, 

 and around the eye, black; primary and greater secondary coverts, 

 white, forming a white wing patch; rest of plumage, black. 



Yellow-headed Blackbird (male). 



