BIRDS OF MINNESOTA. 3891 
myself of the certainty of the identification. Audubon’s de- 
scription of the Blackburnian Warbler’s nest and eggs meet my 
own observations so perfectly that I quote it. It is as follows: 
“Tt was composed externally of different textures, and lined 
with silky fibers, and then delicate strips of fine bark, over 
which lay a thick bed of feathers and horsehair. The eggs 
were small, very conical towards the smaller end; pure white, 
with a few spots of light red towards the larger end. It was 
found in a small fork of a tree, five or six feet from the ground, 
near a brook.” 
SPECIFIC CHARACTERS. 
Upper parts nearly uniform black, with a whitish scapular 
stripe and a large white patch in the middle of the wing cov- 
erts; an oblong patch in the middle of the crown, and the en- 
tire side of the head and neck, including a superciliary stripe 
from the nostrils, the chin, throat, and forepart of the breast, 
bright orange red; a black stripe from the commissure passing 
over the lower half of the eye, and including the ear coverts, with, 
however, an orange crescent in it just below the eye, the extreme 
lid being black; rest of under parts white, strongly tinged with 
yellowish-orange on the breast and belly, and streaked with 
black on the sides; outer three tail feathers and quills almost 
black. 
Length, 5.50; wing, 2.33; tail, 2.25. 
Habitat, eastern North America to the Plains. 
DENDROICA VIRENS (GMELIN). (667.) 
BLACK-THROATED GREEN WARBLER. 
There was general rejoicing when this beautiful bird was 
first obtained. I found him in a thicket of poplars some four 
miles out in the country, and near a strip of heavy forest 
timber. He arrives not very unfrequently as early as the 30th 
of April, once on the 25th of that month, but commonly before 
the 5th of May. On one or two occasions it has been collected 
as late as the 5th of October, but as a rule they are gone by 
the 25th of September. This warbler comes to stay, and breeds 
in almost every section of the State, but is never represented 
by large numbers. The earliest nests I have seen have been 
built after the 5th of June, and they bring out but one brood so 
far as I have observed. It is generally placed in a small tree, 
about ten or twelve feet from the ground, and consists of fine 
strings of bark of some flexible kind, disposed very artistically 
in circles, and woven in with the flaxen fiber of some kinds of 
weeds for the main structure, which is lined with feathers, anda 
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