NORTHERN BLACK-THROATED GREEN WARBLER 305 



Ontario (Lac Seul, Rossport, Cliapleaii, and Lake Abitibi ; casual or 

 accidental at Moose Factory) ; central Quebec (Mistassini Post, Upper 

 St. Maurice River, Godbout, Mingan, and Natashquan) ; and casually 

 in southeastern Labrador (Battle Harbor). East to southeastern 

 Quebec (Natashquan) ; southwestern Newfoundland (Spruce Brook 

 and Tompkins) ; Nova Scotia (Sydney, Halifax, and Barrington) ; the 

 coast of New England; Long Island (Miller's Place) ; northern New 

 Jersey (Demarest and Dover) ; central Pennsylvania ( Potts ville and 

 Carlisle) ; central Maryland (Thurmont) ; central and southeastern 

 Virginia (Charlottesville and Dismal Swamp) ; North Carolina (Lake 

 Mattamuskeet) ; and central South Carolina (Charleston). South to 

 South Carolina (Charleston) ; northern Georgia (Pinelog Mountains 

 and Lookout Mountain) ; northeastern Alabama (Sand Mountain) ; 

 southeastern Kentucky (Big Black Mountain and Jackson) ; central 

 Michigan (Bay City and Mason County) ; northern Wisconsin (New 

 London and Ladysmith) ; central Minnesota (Lake Minnetonka, 

 Mille Lacs, and Cass Lake) ; southwestern Manitoba (Aweme) ; and 

 southern Alberta (Brooks). West to western Alberta (Brooks, 

 Glenevis, Sturgeon Lake, and Grande Prairie). 



Winter range. — The black-throated green warbler is found in win- 

 ter north to southern Texas (Arroya Colorado, Willacy County) ; 

 and Yucatan (Tunkas and Chichen-Itza) . East to Yucatan 

 (Chichen-Itza) ; the coast of Quintana Roo; northeastern El Salvador 

 (Mount Cacaguatique) ; eastern Costa Rica (Volcan Irazu) ; and cen- 

 tral Panama (Veragua) ; casual or accidental to northern Colombia 

 (one record; Cincinnati, Santa Marta region). South to Panama 

 (Veragua and Volcan de Chiriqui). West to western Panama (Vol- 

 can de Chiriqui) ; western Costa Rica (El General) ; western El 

 Salvador (San Salvador) ; western Guatemala (Volcan de Agua and 

 Dueiias) ; Oaxaca (Tehuantepec) ; western Morelos (Curnavaca) ; 

 Puebla (Metlatoyuca) ; southern Tamaulipas (Altamira) ; probably 

 eastern Nuevo Leon (Linares) ; and southern Texas (Santa Maria and 

 Arroya Colorado). 



The black-throated green warbler has apparently extended its winter 

 range northward in recent years. Except for a single specimen taken 

 at Brownsville in January 1911, it was not known to winter in Texas 

 until 1933-34, when about 30 birds were seen. Since then it has in- 

 creased and spread over most of Cameron County and to tlie southern 

 border of Willacy County. One was recorded on Bull's Island, S. C, 

 on January 8 and 9, 1940. 



The species is also rare or casual in winter or migration in the West 

 Indies: Cuba (Habana and Isle of Pines); Jamaica; Haiti (lie a 

 Vache) ; Puerto Rico (Adjuntas) ; and the islands of St. Croix, 

 Guadeloupe, and Dominica ; also Watling Island, Bahamas. 



