246 
at Chicago, Ill., May 9, three days after they had reached points on the 
Mississippi River, a hundred miles farther north. The last part of the 
migration seems to have been more rapid than the first. The birds 
were so delayed by the cold of the early part of May that on May 11 
there had been no record of arrival at any point north of latitude 449°, 
yet by May 16 they had been seen over the rest of Wisconsin, all of 
Minnesota, central Dakota, and at two stations in Manitoba, up to lati- 
tude 50° 30’. More than two hundred were seen at White Earth, Minn., 
May 16. 
In the fall of 1885 the last left Saint Louis, Mo., August 13, and Bon- 
ham, Tex., September 3; and the first migrant reached San Angelo, 
Tex., August 28, 
654. Dendroica cwrulescens (Gmel.), [94.] Black-throated Blue Warbler. 
The movements of this species may be summed up in a few words: 
It winters from Florida southward, extends west to Texas, Indian Ter- 
ritory, Kansas, and Nebraska, and breeds principally in British America, 
though a few doubtless nest in northern Minnesota. It reached latitude 
40° May 1, latitude 42° May 6, latitude 44° May 10, and was seen at 
Elk River, Minn., May 23, but probably arrived there a few days earlier, 
This is one of the birds that is unaccountably rare at Saint Louis, while 
it is abundant in the surrounding country. At Pierce City, Mv., May 
2, it was, next to the Yellow-rump, the most common Warbler. 
In the spring of 1885 the first Black-throated Blue Warbler was seen 
at Saint Louis April 30; at Paris, Il., May 1; at Milwaukee, Wis., 
May 5; at Waukon, Iowa, May 14; and at Hastings, Minn., May 19. 
In the fall of 1885 it was first seen at Lanesboro, Minn., September 
30. At Fernwood, Ill, the first was seen September 6; the bulk left 
October 11, anc the last October 14. An albino was taken at Fern- 
wood during fall migration. 
655. Dendroica coronata (Linn.). [95.] Yellow-rumped Warbler. 
Breeds from northern Minnesota northward, and winters from the 
middle portion of the Mississippi Valley southward. Dr. J. C. Merrill 
states that in the Lower Rio Grande Valley in Texas the Yellow-rump 
“is perhaps the most common of the winter residents, and is found in 
the greatest abundance from the latter part of October to April. About 
the latter part of March there is an arrival of males from the south in 
nearly full breeding plumage.” The species winters over an immense 
area, While it is abundant in southern Texas, and great numbers pass 
on through Mexico to Central America, as far, even, as Panama, still 
it is the hardiest of our Warblers, and unnumbered thousands regu- 
larly pass the winter in the lower half of the Mississippi Valley. It 
has been known to endure a temperature of 20° below zero with no 
apparent inconvenience. With plenty of poison ivy berries to eat, it 
seems. not to care how the mercury stands. Along latitude 39° it gen- 
erally winters almost everywhere, but the unusually severe weather of 
