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KEY TO THE BIRDS OF EASTERN NOHTH AMERICA. 



FAMILY ICTERID/E. 

 Blackbirds, Orioles, Meadow Larks, etc. 



First primary, not short; base of bill slightly dividing the feathers of 

 the forehead ; nostrils, exposed ; outer tail feathers, shorter than middle 

 feathers. 



Group 1. Wing, less than 3.75 inches long. 



Section 1. The following species have the underparts 

 more or less marked with either yellow, orange, or chestnut 

 brown. 



Head and throat, black ; underparts, orange yellow ; back, black. 



Baltimore Oriole. 



Icterus yalbula (male}- 

 See No. 379. 



Head, more or less marked with black; back, blackish; underparts, orange, paler 

 than the male. Baltimore Oriole. 



Icterus galbula (female"). 

 See No. 379. 



Crown aud back, dull olive, faintly tinged with yellow on rump ; underparts, pale 

 yellow, usually with faint orange tinge; wing, over 3.45. Baltimore Oriole. 



Icterus yalbula (immature). 

 See No. 379. 



Head and back, black; rest of under- 

 parts, chestnut brown. 



Orchard Oriole. 



Icterus spurius (male). 

 See No. 378. 



Crown and back, greenish, without 

 stripes; underparts, yellow (not 

 orange); wing, under 3.45. 



Orchard Oriole. 



Icterus spurius (female}. 

 See No. 378. 



Crown, with yellow buff in centre, 

 bordered by black; back, streaked 

 with black; underparts, pale yel- 

 low, tinged with buff; tail feathers, 



pointed. 



Bobolink. Rice Bird. 



Dolichonyx oryzivorus (female). 

 See No. 370. 



Orchard Oriole. 



