40 



a. Conspicuously crested. 



Color largely blue, Blue Jay. 



No blue at all, Cedak Bird. 



aa. No crest. 



b. Length 2 feet or more ; black Raven. 



bb. Length under 20 but over 16 inches ; black, Crow. 

 bbb. Length under 14 inches ; not black, 

 c. Breast bright yellow. Yellow-breasted Chat. 



cc. Breast not yellow. 



Bright ferruginous above, Bkown Thrasher. 

 Slate color. Cat Bird. 



B. Length under 6|- inches. 

 a. Nostrils covered by a tuft of bristly feathers. , 



Throat black. Chickadee. 



Throat rusty-red, Eed-breasted Nuthatch. 



Throat white. White-breasted Nuthatch. 



aa. Nostrils not as above ; tail feathers rigid and sharp 



pointed like a woodpeckers. Brown Creeper. 



aaa. Nostrils and tail feathers not as above. 



b. Color chiefly brown, more or less waved withdarker ; 



wings and tail barred. 



Length over i^ inches ; wings equal to tail. 



House Wren. 

 Length under 4^ inches ; wings much longer 

 than tail, Winter Wren. 



bb. Color not as above, 

 c. Bill conical, slender ; bristles at base short or 

 wanting, 

 d. Length 5^ inches or more ; tail feathers without 

 white, 

 e. Crown golden-brown. Oven Bird. 



ee. Crown not golden-brown, 

 f. Not spotted beneath. Worm-eating Warbler. 



