WILSON WARBLER. 
685. Wilsonia pusilla. 5 inches. 
Male, with black crown pateh ; female, with the crown 
greenish like the back. 
These little fty-catching Warblers are abundant in 
the United States during migrations, being found in 
woods or swamps, and very often in apple trees when 
they are in bloom. They fly about among the outer 
branches snatching insects from the foliage or blos- 
soms, and often dashing out to catch one that is flying 
by. Their natural pertness is intensified by their very 
attractive plumage which harmonizes perfectly with 
green leaves. 
Song.—A simple and rather weak trill. 
Nest.—Of leaves and bark, imbedded in the ground 
under bushes on the edges of swamps or woods; eggs 
white, speeked with reddish brown (.60 x .48). 
Range.—LHastern N. A.. breeding from the northern 
edge of the U. 5. northward; winters in Central America. 
Two sub-species are found west of the Rockies. 
