'" NORTH AMERICAN WARBLERS. 



New Brunswick, September 1, 1890; Chicago, October 4, 1897, and at 

 bermantown, Pa. , October 19, 1885. It will be seen at once that there 

 IS no easy solution of the line of migration of the bay-breasted warbler 

 between its summer and winter homes. The data are so meager that 

 the line of migration must be judged from the movements of other 

 species. The principal route seems to be much the same as that taken 

 by D. cerulea and D. pensylvanica. The bay -breasts apparently make 

 the long flight across the Gulf of Mexico to the highlands of Guate- 

 mala and Honduras, and then follow the mountains to Panama and 

 Colombia. 



661. Dendroica striata ( Forst. ) . Black-poll Warbler. 



Breeding range.—The summer home of the black-poll warbler is 

 entirely within the Canadian and Hudsonian zones. The species 

 breeds in northern Maine, the mountains of northern New England 

 and New York, northern Michigan, and Manitoba, and ranges north 

 to the Gulf of St. Lawrence, Newfoundland, the limit of tree growth 

 in Labrador and Hudson Bay, and northwest to Alaska. The south- 

 ernmost breeding record is at Seven Lakes, near Manitou, Colo., at 

 an altitude of 11,000 feet. The black-poll occurs regularly though 

 sparingly in Colorado, less commonly in New Mexico (in migration), 

 and northwest through Montana to Log Cabin, Yukon, and Cook Inlet, 

 Alaska. 



Winter range. — The black-poll warbler winters in the northern part 

 of South America, ranging east to the Oyapock Riverain eastern 

 French Guiana and to Para, Brazil.* It has been taken in November 

 and January in British Guiana" at an altitude of 3,700 feet; it has also 

 been secured in fall migration near Merida,"' Venezuela, at 5,400 feet, 

 and several times in the vicinity of Bogota,* Colombia, at probably 

 not much less than 9,000 feet. During the fall migration of 1898 

 many specimens were taken from October 7 to November 23 at Bonda,-^ 

 on the northern coast of Colombia, and at Mamatoca^' October 13, and 

 at Cantilito^ October 14. A large number of specimens were secured 

 from November 21 to April 25 at various places in the lower portions 

 of the valleys of the Orinoco'' and Caura* rivers, which shows that the 

 I'egion is one of the main winter homes of the black-poll warbler. 

 There are records of the occurrence of the species on the Rio Negro* 



"Sharpe, Cat. Birds Brit. Mus., X, p. 650, 1885. 

 b Spix. Av. Bras. I, 75, 1824; Burmeister, Thiere Bras. Ill, 120, 1856. 

 <Salvin, Ibis, p. 202, 1885. Quelch, Timehri, X, p. 261, 1896. 

 ('Sclater & Salvin, P. Z. S., p. 780, 1870. Ernst, Flora & Fauna Venez. 801, 1877. 

 "Sclater, P. Z. S., p. 143, 1855. Baird, Eev. Am. Birds, p. 192, 1865. 

 /Allen, Bull. Am. Mus. Nat. Hist, XIII, p. 177, 1900; Auk, XVII, p. 366, 1900. 

 a Specimens in Carnegie Museum, Pittsburg, Pa. 

 . /'Berlepsch & Hartert, Novit. Zool., IX, p. 9, 1902. 



i Sharpe, Cat. Birds Brit. Mus., X. p. 327, 1885. Pelzeln, Orn. Bras. 69, 463, 1869. 



