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at Chicago, 111,, 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 44°, 

 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 10. 



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 caerulescens (Gmel.). [94.] Black-throated Blue JVarhler. 



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 Eiver, 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, Mo., May 

 2, it was, next to the Tellow-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, 111., 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 Fern wood, 111., the first was seen September 6; the bulk left 

 October 11, and the last October 14. An albino was taken at Fern- 

 wood during fall migration. 



655. Dendroica coronata (Linn.). [95.] Tellow-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 

 a is perhaps the most common of the winter residents, and is found in 

 the greatest abundance from the latter part of October to A pril. About 

 the latter part of March there is an arrival of males from the south in 

 nearly full breeding plumage.' 1 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 



