BAY-BREASTED WARBLER 387 



be seen. In my experience, the blackpolls far outnumber them in 

 New England, being by far our commonest warbler in the fall. The 

 fall migration route of the bay-breasted warbler is apparently a re- 

 versal of the route followed in the spring, southward west of the AUe- 

 ghenies and west of or across the Gulf of Mexico to Panama and 

 Colombia. 



DISTRIBUTION 



Range. — Southern Canada to northwestern South America. 



Breeding range. — The bay-breasted warbler breeds north to north- 

 eastern British Columbia (Lower Liard Crossing) ; northern Alberta 

 (Athabaska Lake near Chip wy an) ; casually north to southwestern 

 Mackenzie (Wrigley) ; central Saskatchewan (Flotten Lake) ; central 

 Manitoba (Berens Island, Lake Winnipeg, and possibly Oxford 

 House) ; central Ontario (Gorman Creek, Patricia district; Lac Seul, 

 Lake Nipigon, and Moose Factory) ; and southern Quebec (Mistassini 

 Post, Piasti, and Natashquan) ; casual north to Hamilton Inlet, 

 Labrador. East to southeastern Quebec (Natashquan) ; west-central 

 Newfoundland (Grand Lake) ; and Nova Scotia (Baddeck, Pictou, 

 and Halifax). South to Nova Scotia (Halifax); southern Maine 

 (Ellsworth and Thomaston) ; central and southwestern New Hamp- 

 shire (Tam worth, Webster, and Mount Monadnock) ; northern New 

 York (Adirondack Mountains) ; southern Ontario (Southmag and 

 French Kiver) ; northern Michigan, rarely (Sugar Island, St. Mary's 

 Eiver, and Isle Koyale) ; northern Minnesota (Clear Lake and Itasca 

 Park; possibly Elk River) ; southwestern Ontario (Off Lake, Rainy 

 River district) ; southern Manitoba (Indian Bay, Lake of the Woods, 

 and Aweme) ; central Saskatchewan (Flotten Lake) ; central Alberta 

 (Glenevis, Faust, and Sturgeon Lake) ; and central eastern British 

 Columbia (Charlie Lake). West to northeastern British Columbia 

 (Charlie Lake and Lower Liard Crossing; possibly Indian Point Lake 

 and Tatana Lake) . 



Winter range. — In winter the bay-breasted warbler is found north 

 to central Panama (Canal Zone) ; the coastal region of Colombia 

 (Santa Marta region) ; and Venezuela (Rancho Grande and Tortuga 

 Island). South to northern Venezuela (Tortuga Island, Merida, and 

 La Uraca) ; and west central Colombia ( Valvidia) . West to western 

 Colombia (Valvidia and Rio Frio) ; and eastern Panama ^Cana and 

 Canal Zone) . 



Migration. — ^Late dates of departure from the winter home are: 

 Colombia — Malena, March 10. Panama — Toro Point, April 27. 



Early dates of spring arrival are : Mexico — Gomez Farias, Tamau- 

 lipas, April 2. Florida — Pensacola, April 23. Alabama — Sand Moun- 

 tain, April 20. Georgia — Roswell, April 21. North Carolina — 



