110 NORTH AMERICAN WARBLERS. 



3^ ear at Berwyn, Pa., is September 4, 1896, and at Kaleigh, N. C, 

 September 12, 1894. The latest dates at Eubank, Ky., are Septem- 

 ber 2, 1887, and September 6, 1888, and the latest at Bonham, Tex., 

 August 20, 1885. The species usually leaves New Orleans by the mid- 

 dle of September, though a very late migrant was noted October 19, 

 1895. 



South of Mexico there are no records of fall migrants except Octo- 

 ber 7, 1890, San Jose, Costa Rica, and October 7 and 8, 1897, and 

 October 11-November 12, 1898, Bonda, Colombia. 



Later explorations fill the gaps left by previous records and make 

 clear the principal path of migration. The birds from the Mississippi 

 Valley pass south to the Gulf Coast. Since the species is rare on the 

 South Atlantic coast and in the peninsula of Florida, and has probably 

 never been taken in the West Indies, except once at Santiago, Cuba 

 (Gundlach's records for Cuba^ are probably incorrect), it seems evident 

 that the summer birds of the Atlantic slope follow the general trend 

 of the country to the southwest, and on arrival at the Gulf fl}^ south to 

 the damp region of southern Mexico and Central America. The species 

 seems to avoid the Rio Grande region of Texas and, so far as the rec- 

 ords go, all of northern Mexico and Yucatan; and it has not 3^et been 

 taken in Honduras, though it may occur in the southern part of that 

 countr3^ Its main migration route is determined by the presence of 

 damp, heav}^ forests. 



678. Geothlypis agilis ( Wils. ) • Connecticut Warbler. 



Breeding range. — Summer records of the Connecticut warbler are 

 rare. There is a single record of its breeding in Manitoba;^ it was 

 found located for the summer in a tamarack swamp near Hickory, 

 Aitkin Count}^, Minn.,^ where it was seen from June 21 onward; it 

 was seen in July on the St. Louis River in eastern Minnesota, and 

 therefore probably breeds in that locality ; and it is claimed to breed 

 not uncommonly in southern Wisconsin. 



Winter range. — There are five records of the occurrence of the Con- 

 necticut warbler south of the United States: Tonantins, Brazil,'^ April 

 9, 1881; Cay Sal, Bahama Islands,^ May, 1891; New Providence, 

 Bahamas,-^ October 12-14, 1898; Cay Lobos light, Bahamas,^ May 9, 

 1901, and Bonda, Colombia,^^ October 22, 1898. Thus, although it is 

 certain that the species winters in South America, there is as yet not 

 a single winter record. 



Spring migration. — All writers agree that during the spring migra- 

 tion this species is more common west of the Alleghenies than east, 



«Gundlach, J. f. Orn., p. 417, 1872. / Bonhote, Ibis, p. 510, 1899. 



ftSeton, Auk, I, p. 192, 1884. <7 Bonhote, Auk, XX, p. 172, 1903. 



<^ Gault, Auk, XIV, p. 222, 1897. -^ Allen, Bull. Am. Mus. Nat. Hist., XIII, 



t^Berlepsch, J. f. Orn., p. 98, 1889. p. 177, 1900; Auk, XVII, 366, 1900. 

 6 Cory, Auk, VIII, p. 352, 1891. 



