BI.UE-WINGED WARBLER. 259 
haunts of men, to pass the period of breeding and rearing its 
young in more security. 
The apparent distribution of this species, judged by the records 
of recent observations, is somewhat peculiar. It seems to be 
abundant in the southwestern portion of this Eastern Province, and 
rarely ranges east of the Alleghanian hills until north of 40°, when 
it spreads off to the shores of the Atlantic, though seldom going 
beyond latitude 42°. A few examples only have been taken in 
Massachusetts, and though common in Ohio it has not been seen 
in Ontario, farther west it is found north to the southern por- 
tions of Michigan, Wisconsin, and Minnesota. It winters south to 
eastern Mexico and Guatemala. 
The nests that have been discovered in recent years are not 
fashioned like that described by Wilson, for instead of being 
funnel-shaped, they have the ordinary cup-like form. 
Opinions differ regarding the song, but I am inclined to believe 
that it is a rapid trill of strong, sweet tones, limited m compass and 
executed with little art, —a merry whistle rather than an artistic 
melody. 
