ISO PASSERES : Perching Birds 



WESTERN FLYCATCHER 



(464. Empidonax difficilis difficilis) 5| in. 



Upper parts and sides of head brownish olive; greenish yellow 

 below, with buffy-olive chest and sides; wings dusky, with buffy- 

 gray bars. Light yellow eye-ring is conspicuous. 



Note a low, plaintive "pee-u," quite unlike that of any 

 other Flycatcher of our region is fairly distinctive. 



Nest in a cavity or hole of any sort, in a tree or rock, or even 

 in an earth bank. 



WESTERN WOOD PEWEE 



(462. Myiochanes richardsoni richardsoni) 6| in. 



Dark olive above; throat light gray; breast olive-gray; belly 

 grayish white. Crown feathers lengthened, forming a short 

 crest that is habitually erected. 



Best identified by its note, a trilled "twee-r," with falling 

 inflection, often alternating with rising inflection. 



Characteristically perches erect, on a high, dead twig, from 

 which it swoops at passing insects, returning to the same perch. 



TRAILL FLYCATCHER 



(466. Empidonax trailli trailli) 5| in. 



Back olive; throat whitish; gray breast-band; belly whitish or 

 tinged with yellow; wing-bars varying from brownish gray to 

 white; a whitish eye-ring. 



Colors of under parts much more definite than in the three 

 following species. White throat fairly defined against the breast- 

 band. 



Its different habitat in nesting-season easily identifies it at 

 that time. 



