234 BULLETIN 2 3, UNITED STATES NATIONAL MUSEUM 



Timiskaming) ; and southern Quebec (Blue Sea Lake, Quebec, God- 

 bout, and Mingan) . East to southern Quebec (Mingan, Grand Greve, 

 and the Magdalen Islands) ; eastern Nova Scotia (Cape Breton Island 

 and Halifax) ; southern Maine (Ellsworth and Auburn) ; southeast- 

 ern Massachusetts (Taunton) ; Connecticut (Hadlyme) ; northeastern 

 Pennsylvania (Lords Valley and Pocono Mountain) ; and southward 

 through the AUeghanies to Northwestern South Carolina (Mountain 

 Rest) ; northeastern Georgia (Rabun Bald, Brasstown Bald, and 

 Young Harris) . South to northern Georgia (Young Harris) ; south- 

 eastern Tennessee (Beersheba Springs) ; southeastern Kentucky (Log 

 Mountain and Black Mountain) ; northeastern Ohio (Wayne Town- 

 ship and Pymatuning Bog) ; northern Michigan (Douglas Lake and 

 Wequetonsing) ; northern Wisconsin (Fish Creek, Mamie Lake, and 

 Perkinstown) ; and northern Minnesota (Kingsdale, Cass Lake, and 

 AVliite Earth ; possibly sometimes near Minneapolis) . West to north- 

 ern Mimiesota (White Earth) and western Ontario (Lac Seul). The 

 species veiy probably breeds rarely in Manitoba or Saskatchewan 

 where there are as yet only a few records and it is a recent arrival. 

 At Emma Lake, Saskatchewan, 40 miles north of Prince Albert, 5 

 were observed June 27 to July 2, 1939. The first record for the 

 Province was a specimen collected on October 21, 1936, at Percival, 

 100 miles east of Regina. It is a rare but tolerably regular migrant 

 through eastern North and South Dakota, suggesting that there is 

 some as yet unknown breeding area. The species has been recorded 

 in migration, more often in fall, in Wyoming, Colorado, Nebraska, 

 Kansas, Oklahoma, and Texas. 



Observers at Aweme, Manitoba, in 38 years recorded it only twice. 

 Another observer at Eastend, southwestern Saskatchewan, recorded 

 it for the first time on September 21, 1937, after at least twenty 

 years of continuous observation. 



On the basis of such information it seems probable that the species 

 is slowly spreading its breeding range westward. 



Winter range. — The principal winter home of the black-throated 

 blue warbler is in the West Indies where it is found north to the 

 Bahamas (Andros, Nassau, and Watling Islands). East to Puerto 

 Rico (Rio Piedras) and the Virgin Islands (St. Croix). South to 

 Puerto Rico (Maricas) ; Hispaniola (Paraiso, Dominican Republic; 

 and Jeremie, Haiti) ; Jamaica (Spanishtown) ; and the Swan Islands. 

 West to the Swan Islands; Cozumel Island; Cuba (Habana) ; and the 

 Bahamas (Andros). It is also casual north to southern Florida 

 (Sanibel Island, Key West, and Sombrero Key) ; accidental in Guate- 

 mala (Coban) ; and in northern South America; Venezuela (Ocumare 

 and Rancho Grande) ; and Colombia (Las Nubes, Santa Marta re- 

 gion, and Pueblo Viejo), 



