WESTERN FLYCATCHER. 
464. Empidonax difficilis. 6 inches. 
Very much like the last, but having more of the yellow 
cast on the under parts; it may be found breeding from 
Alaska to southern California. Its favorite nesting place 
is along some stream, bordered with willows or alders, and 
the nest is placed on the lower branches near the ground; 
it is nicely made of fibers and plant down; three or four 
white eggs, spotted with brown (.80 x .55). 
TRAILL FLYCATCHER. 
466. Empidonax trailli. 6 inches. 
Upper parts an olive brown, becoming darker on the head; 
under parts white, and also a white ring about the eye; two 
wing-bars a pale buff color, and the breast a light gray. They 
seem to prefer much the same localities for their nesting site 
as do the il Western. 7; 
Nest. —Is usually built very low in willows or alders, bor¬ 
dering brooks or ponds, and is made of plant fibers, lined 
with the down, and sometimes horsehair; three or four creamy 
white eggs are marked with blotches of brown about the 
larger end (.70 x.54). 
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