BLACK AND WHITE WARBLEK. 19 



(6,000 feet),« and Sta. Elena (6,000 feet). These records carry the 

 known range throughout the northern half of Colombia. The bird has 

 also been recorded in the winter at Merida, Venezuela (5,400 feet),* 

 and at Quito, Ecuador." It is common in Panama up to 4,000 feet,'* and 

 at altitudes ranging from 1,500 to 4,000 feet in Costa Rica. It undoubt- 

 edly occurs during the winter on the higher lands of Honduras and 

 Nicaragua, but apparently is not recorded from either country, prob- 

 ably because during this season observers have been only on the coast 

 or at altitudes of less than a thousand feet in the interior. It has been 

 taken in fall migration on Ruatan Island, off the coast of Honduras.* 

 Irom northern Yucatan it ranges to the Pacific coast of Guatemala. 

 It is found in winter on the islands-^ and mainland^ of Yucatan 

 and up to at least 7,000 feet in the mountains of Guatemala. In 

 Mexico the distribution of the bird is extensive and peculiar. It is 

 one of the few species from the eastern part of the United States that 

 winter on the coast of western Mexico as far north as Colima and 

 Mazatlan. The parties of the Biological Survey met it in nearly every 

 part of Mexico visited, though under quite different conditions of 

 altitude at different times of the year. In winter they took it on the 

 coast in Colima and Guerrero, and up to 3,500 feet in Chiapas. They 

 found it rather common below a thousand feet in Campeche, Tabasco, 

 and in eastern Puebla, and less common from 1,000 to 3,500 feet. It 

 winters as far north as Monterej', Nuevo Leon, and occasionally 

 reaches southern Texas. In the early fall (August 18 to September 1) 

 it has been found from 4,000 feet in Chiapas to a little above 10,000 

 feet in Oaxaca. 



In the Bahamas the black and white warbler is recorded from the 

 northern half of the group to Rum Cay.'' It is a common winter 

 resident of the Greater Antilles, and has been taken in the Lesser 

 Antilles as far east as St. Croix, St. Eustatius,* and Guadeloupe.-' It 

 also winters in southern Florida, and rarely as far north as St. 

 Augustine. 



Spring migration. — The earliest records of spring migration of the 

 black and white warbler are of birds striking the lighthouses of Alli- 

 gator Reef and Sombrero Key, Florida, in the first week in March. 



aSclater and Salvin, P. Z. S., p. 493, 1879. 



^Sclater and Salvin, P. Z. S., p. 780, 1870. Ernst, Eev. Cient. Univ. Venez. I, 33, 

 1887; Flora & Fauna Venez., p. 301, 1877. 

 cOrton, Am. Nat, V, p. 623, 1871. 

 d Bangs, Proc. N. E. Zool. Club, III, p. 63, 1902. 

 «Eidgway, Proc. U. S. Nat. Mus., X, p. 578, 1888. 

 /Salvin, Ibis, p. 246, 1888. 

 !7Boucard, P. Z. S., p. 440, 1883. 

 ARidgway, Auk, VIII, p. 338, 1891. 

 ^Cory, Auk, VIII, p. 447, 1891. 

 .;' Lawrence, Proc. U. S. Nat. Mus., VIII, p. 621, 1885. 



