44 NOETH AMERICAN WARBLERS. 



Fall migration. — The Tennessee warbler begins to move southward 

 in AuoTist from its smumer home. It was noted at Hallock. Minn., 

 August 2, 1899; Mackioac Island, Michigan,. August 8, 1889; Chicago, 

 August 13, 1896; Englewood. X. J., August 26, 1887: and Washing- 

 ton, August- 31, 1890. Arrivals of the earliest southbound migrants 

 were recorded at Asheville, N. C, September 13, 1890, and September 

 10, 1894. In Chester County, S. C, in eleven years' observation, the 

 earliest date of arrival from the north was September 8. 



Few Tennessee warblers pass through Florida to the West Indies. 

 Two specimens were taken on October 5 and 6, 1887, at Kej^ West, but 

 there are no other records of the occurrence of the species in southern 

 I^lorida. The bird, however, undoubtedlv passes regularlv through 

 western Florida, as it does through Mississippi and Louisiana. At 

 Eubank, K3\, the earliest record of a fall migrant was September 9, 

 1887. The earliest birds were seen at New Orleans September 23, 1896, 

 September 22, 1897, and September 18, 1899. Some individuals pass 

 through eastern Texas into ^lexico, and migrants have been taken at 

 Jalapa, Vera Cruz.^ The species was taken in September on the island 

 of Bonacca, Honduras,^ and on the coast of southeastern Nicaragua, 

 October 24, 1892.^ Several Tennessee warblers were seen at San Jose, 

 Costa Rica, September 17, 1889, the next noted in that year arriving 

 October 14. The earliest arrival in the following year was on October 

 20.-'' Von Frantzius records that he saw the Tennessee warbler in 

 August in Costa Rica, but if there was no mistake in identification, the 

 occurrence must have been accidental. The earliest date of arrival at 

 Bonda, on the north coast of Colombia, is November 3.^ These records 

 show that the principal line of migration is from the Mississippi Valle\^ 

 across the Gulf of Mexico to ^Mexico and Central America. The east- 

 ern part of this route probabh^ extends from the southern end of the 

 AUeghenies across northwestern Florida to the coast of Yucatan and 

 Honduras. 



The Tennessee warbler is quite slow in leaving the United States. 

 As late as October it occurs throughout the whole of the eastern part 

 of the United States, from the Great Lakes to the Gulf. Though it 

 leaves the northern part of this region early in the month, it lingers 

 in the southern part until its close. Some records of latest departure 

 are: Aweme, Manitoba, October 3, 1901; Grinnell, Iowa, October 1, 

 1886; Ottawa, September 30, 1889; Palmer, Mich., September 27, 

 1894; Chicago, October 9, 1894; Beaver, Pa., October 11, 1890: Wash- 

 ington, October 12, 1890; St. Louis, October 20. 1885; Asheville, 



« Chapman, Bull. Am. Mus. Nat. Hist., X, p. 24, 1898. 



^ Salvin, Ibis, p. 247, 1888. 



c Richmond, Proc. U. S. Xat. Mus., XVI, p. 484, 1893. 



Cherrie, Auk, VII, p. 335, 1890; Auk, VIII, p. 278, 1891. 



Allen, Bull. Am. Mus. Xat. Hist., XIII, p. 178, 1900. 



