FIELD COLOR KEY xli 



16'. Size small ; breast with necklace of black spots ; 

 upper parts gray. 



p. 322. CANADIAN WARBLER. 



6'. UNDER PARTS NOT MAINLY YELLOW OR ORANGE. 

 17. Top of head red. 



18. Back uniformly barred with black and white; 

 under parts whitish, washed with red. 



p. 211. RED-BELLIED WOODPECKER. 



18'. Back divided into black and white areas ; whole 

 head and throat red ; belly white. 



p. 131. RED-HEADED WOODPECKER. 



IT. Top of head not red. 



19. Breast and belly chestnut ; whole head, throat, and 

 most of back black . . p. 61. ORCHARD ORIOLE. 



19'. Breast and belly not chestnut ; whole head not 



black. 



20. Front of head and throat white ; back of head and 

 neck blackish ; rest of body mainly grayish ; plu- 

 mage soft and fluffy. Northern birds. 



p. 217. CANADA JAY. 



20'. Front of head and throat not white ; back of head 



and neck not blackish. 

 21. Upper parts blue. 



22. Head crested ; throat gray with black collar. 



p. 154. BLUE JAY. 



22'. Head not crested ; throat and sides black. 



p. 312. BLACK-THROATED BLUE WARBLER. 



21'. Upper parts not blue. 



23. Throat white, sides of breast and rump yellow ; 

 breast black. 



p. 310. YELLOW-RUMPED WARBLER. 



