20G 



KEY TO THE BIRDS OF EASTERN NORTH AMERICA. 



Upper plumage, brownish olive, or dull, grayish olive; throat aud middle of 



belly, white, sometimes tinged with pale yellow ; breast (except middle) and 



sides of body, dull grayish olive; uuder mandible, pale. 



Olive=sided Flycatcher. 



Cantopus borealis. 



See No. 350. 



Crown and back, ashy; throat and breast, ashj'- white; sides of breast and 

 body, orange red ; tail, very long, rarely less than four and one half inches. 



5cissor=tailed Flycatcher. 



Milvulus forficatus. 

 See No. 343. 



Crown, black, with concealed patch of yellow; back, gray; underparts, white; 



tail, very long, usually more than four aud one half inches. 



Fork=tailed Flycatcher. 



Milvulus tyraniuis. 



See No. 342. 



