ROUTES OF MIGRATION'. 9 



In the lists that follow the species known to use each of the principal 

 migration routes are mentioned. The mention of a species, however, 

 must not be understood as meaning all the individuals of that species, 

 but only a greater or smaller number. In each case it is probable 

 that species other than those enumerated make use of the same route, 

 but records are lacking. 



UNITED STATES TO THE BAHAMAS. 



Some individuals of the following species migrate from the United 

 States to the Bahamas, and find their farthest extension either in the 

 West Indies (at the points mentioned below), on the island of Trini- 

 dad, or on the mainland of South America: 



Black and white warbler {Mniotllta varia)., Guadeloupe (Leeward Islands). 



Worm-eating warbler {Helmitheros vermivorus). Great Ina.gua (Bahamas). 



Parula warbler {Compsothlypis americana). Barbados (Windward Islands). 



Cape May warbler {Bendroica tigrina). Tobago. 



^lac^-ihroated hliiQ warhler {Dendroica cxrulescens). Haiti. 



Myrtle warbler {Dendroica coronata). Porto Rico. 



WiSick-poll warbler {De7idroica striata). Trinidad. 



Yellow-throated warbler {Dendroica dominica). Porto Rico. 



Kirtland warbler {Dendroica Jcirtlandi). Caicos (Bahamas). 



Fsilui warbler {Dendroica palmarum) . Porto Rico. 



Prairie warbler {Dendroica discolor). St. Christopher (Leeward Islands). 



Oven-bird {Seiurus aurocapillus) . St. Croix (Leeward Islands). 



Water-thrush {Seiurus noveboracensis) . Trinidad. 



Louisiana water-thrush {Seiurus motacilla) . Antigua (Leeward Islands). 



Connecticut warbler {Geothly pis ag His). Bahamas; Brazil; Colombia. 



Maryland yellow-throat {Geothlypistrichas). North Bahamas. 



Northern yellow-throat {Geothlypis trichas brachidactyla). Bahamas. 



Redstart {Setopliaga ruticiUa). Trinidad. 



Land birds do not use the line of the West Indies from the Bahamas 

 eastward as their common route of migration between the United 

 States and South America. Some 37 species of these, including 18 

 warblers, cross from Florida to the Bahamas, and about 18 of them, 12 

 being warblers, continue east to Porto Rico, while only 6 are known 

 to pass to the Windward Islands, Trinidad, and South America. On 

 the other hand, about 50 species of land birds migrate from the east- 

 ern United States to South America without being known to enter the 

 Lesser Antilles. 



FLORIDA TO CUBA. 



The best known route is between Florida and Cuba. It is regularly 

 used by individuals of the following species: 



Black and white warbler {Mniotilta varia) . 

 Swainson warbler {Helinaia swainsoni) .' To Jamaica 

 ^ orm-eating warbler {Helmitheros vermivorus) . 

 Bachman warbler {HelmintJiophila bach7nani): 

 Parula warbler ( Compsothlypis americana).; 

 Cape May warbler {Dendroica tigrina) . 



