202 



KEY TO THE BIRDS OF EASTERN NORTH AMERICA. 



Group 3. Wing, 2.75 to 3.25 inches long. 



^ Bill, flat and wide, with small hook at tip, and 

 black bristles at base. 



VVinji, under 3.05 ; under mandible, yellowish white ; throat and underparts, 

 pale greenish yellow ; bnek, olive "Teen. 



Yellow-bellied Flycatcher. 



Eiiipidonax Jlainventris. 

 See No. 352. 



Wing, usually under 3.05; under inandihle, j-ellowish white ; throat, white ; 



breast and belly, whitish, faintly tingtvl with yellow; back, dull olive green. 



Arcadean Flycatcher. 



Empidon ax vircxccufi. 

 See No. .353. 



Wing, under 3.05; upper parts, tinged with olive brown ; throat, while; under 

 mandible, yellowish white; eye=ring and wing bars, pale tawny. 



Traill's Flycatcher. 



Emx)idonax trailli alnurum. 

 See No. 354. 



