74 NORTH AMERICAN WARBLERS. 



have been noted as late as August 21, 1901, at Aweme, Manitoba; 

 September 15, 1889, at Lanesboro, Minn.; September 25, 1887, at 

 Grinnell, Iowa, and September 26, 1895, at Chicago. 



The migration route of the species across the Gulf of Mexico appears 

 to agree closely with that of the cerulean warbler. 



660. Dendroica castanea (Wils. ) Bay-breasted AVarbler. 



Breeding range. — The bay -breasted warbler breeds in northern New 

 England, Nova Scotia, southern Ontario, northern Michigan, Mani- 

 toba, and north to Hudson Bay and Newfoundland; also probably in 

 northern Minnesota. It was taken by one of the parties of the Bio- 

 logical Survey at Oxford House, Keewatin, Jul}^ 3, 1900, and at Fort 

 Chippewyan Ma}^ 28, 1901. It is thus strictly a bird of the Canadian 

 fauna, except that a few nest in southern Ontario. 



Migration range. — There are three published records of the occur- 

 rence of the ba3^-breasted warbler in migration in Texas,^ a specimen 

 in the American Museum of Natural History was taken at Corpus 

 Christi, Tex., May 1, 1882, and one struck the light at Port Bolivar, 

 Tex., May 6, 1893. The bird is not recorded as occurring in the West 

 Indies, nor in Florida, Alabama, or Georgia. It is so rare in Chester 

 County, S. C, that Loomis saw it but twice — May 11, 1887, and Ma}^ 5, 

 1888— in all his years of collecting. It is not included in Smithwick's 

 list of North Carolina birds, and Brimley has seen but one at Raleigh — 

 September 17, 1887. The species is certainly uncommon along the 

 south Atlantic coast, and, though more common northward from Vir- 

 ginia, is ver}^ irregular in different years. In the Ohio Valley it is 

 also irregular, and varies each j^ear from rare to quite abundant. It 

 is a regular, but not usually common, migrant in spring and fall in the 

 Mississippi Valle}^ 



The edge of the forests in Minnesota marks the normal western 

 limit, while Iowa and Missouri mark the western boundary in their 

 respective latitudes. A wanderer was taken in May, 1888, at Pierre, 

 S. Dak., by one of the parties of the Biological Survey; Eugene Cou- 

 beaux took one May 21, 1903, at Big Sandy, Mont.; and the species 

 is a rare migrant in Assiniboia west to Medicine Hat. The earlier 

 records of an occurrence in Nebraska have not been verified by later 

 observers, and the bird is not recorded from Kansas. 



Winter range. — All the winter records of the bay- breasted warbler 

 come from a rather restricted area in Colombia, South America, and 

 the Isthmus of Panama. In the latter district the species is not uncom- 

 mon. In Colombia it has been taken at Medellin^ and Naranjo^ in 



« Merrill, Proc. U. S. Nat. Mus., I, p. 124, 1878. Dresser, Ibis, p. 478, 1865. Nehr- 

 ling, B. N. 0. C, VII, p. 9, 1882. 



feSharpe, Cat. Birds Brit. Mus., X, p. 322, 1885. 

 c Wyatt, Ibis, p. 322, 1871. 



