PASSERES—M NIOTILTIDA. 193 
271. (685.) WILSONIA PUSILLA (Wils.). 63. 
Wilson Warbler. 
Synonyms: Myiodioctes pusillus, Sylvia wilsonii, Muscicapa 
pusilla. 
Green Black-capned Fly-catching Warbler, Green Black-cap- 
ped Yellow Warbler, Wilson’s Blaek-cap, Black-capped 
Yellow Warbler. 
Kirtland, Ohio Geol. Surv., 1838, 163, 182. 
Wilson Warbler is strictly migratory, passing completely 
across the state both spring and autumn. Dr. Wheaton said 
of it, “Not common migrant in spring; abundant in fall.” I 
have never found it common at Oberlin in spring, and even 
less numerous in fall. Its numbers appear to have decreased 
since Dr. Wheaton’s time. It may be found in the shrub- 
bery of woods, or even well up in the trees, when migrating. 
I have found it in orchards not infrequently, in company 
with the other migrating host of warblers. 
This warbler is usually rather late in putting in an ap- 
pearance, but the fact that it is sometimes recorded late in 
April argues that it may well be placed with the group of 
warblers which arrive about May 1. It passes north about 
May 20, and returns early in August, to remain three 
weeks or more. 
272. (686.) WILSONIA CANADENSIS (Linn.). 64. 
Canadian Warbler. ; 
Synonyms: Myiodioctes canadensis, Sylvia pardalina, Sylvicola 
pardalina, Muscicapa canadensis. 
Canada Fly-catching Warbler, Canadian Fly-catching Warb- 
ler, Speckled Canada Warbler, Necklaced Warbler, Cana- 
da Flycatcher. 
Kirtland, Ohio Geol. Surv., 1838, 163, 181. 
The Canadian Warbler should be found as a migrant 
anywhere in the state, both spring and autumn. It is not as 
numerous as many species, but is certain to be seen during 
each migration if one be on the lookout for it. I have found 
it more frequently in the higher woods than elsewhere, but 
it also feeds in the shade trees and orchards. In the woods 
it prefers the middle stories of the trees. 
