BLACKBURNIAN WARBLER 347 



16, 1936; TJjarras (Carriker), September 12. Ecuador— Volcan Tun- 

 gurahua, 7,400 feet, October 12, 1939. 



"Late dates of spring departure from Central America are : Costa 

 Rica— Basin of El General, March 25, 1936, March 13, 1937 and April 

 18, 1943 ; Vara Blanca, May 7, 1938 ; Pejivalle, April 23, 1941 ; Bonilla 

 (Basulto), April 10. Guatemala — Finca Sepacuite (Griscom), May 

 10." 



DISTRIBUTION 



Range. — Southern Canada east of the Great Plains to Central Peru. 



Breeding range. — The Blackburnian warbler breeds north to south- 

 ern Manitoba (Lake St. Martin and Berens Island, Lake Winnipeg) ; 

 central Ontario (Lac Seul, Lake Abitibi, and North Bay ; has occurred 

 at Trout Lake) ; and central Quebec (Blue Sea Lake, Lake Albanel, 

 rarely; Lake St. John and Gaspe; possibly Pointe de Monts and 

 Natashquan). East to eastern Quebec (Gaspe) ; eastern New Bruns- 

 wick (Bathurst and Tabusintac) ; and eastern Nova Scotia (Antigon- 

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

 (Calais, Lewiston, and Portland) ; Massachusetts (Cambridge, 

 Springfield, and Sheffield) ; northern New Jersey (Kittatinny Moun- 

 tains) ; central Pennsylvania (Mauch Chunk and Carlisle) ; and south 

 through the mountains of Maryland, Virginia, West Virginia, North 

 and South Carolina and Tennessee to northern Georgia (Brasstown 

 Bald and Burnt Mountain) ; western Pennsylvania (Leasureville and 

 Meadville) ; northeastern Ohio (Pymatuning Swamp and possibly 

 Geneva) ; northern Michigan (Bay City and Wequetonsing) ; north- 

 ern Wisconsin (New London, Unity and Lady smith) ; and northern 

 Minnesota (Elk River, Onamia, and Itasca Park). West to north- 

 western Minnesota (Itasca Park) and southeastern Manitoba (Win- 

 nipeg and Lake St. Martin) . 



A possible future extension of range westward is seen in records 

 from Saskatchewan: it was recorded four times near Indian Head 

 1888-1901 ; one at Last Mountain Lake in 1920, at Lake Johnston in 

 1922 ; and at Emma Lake in the summer of 1939, possibly breeding. 



Winter range. — The Blackburnian warbler is reported to winter com- 

 monly in Costa Rica, but as yet has been found in Panama only as a 

 migrant. In South America it is found north to northern Colombia 

 (Santa Marta region) ; and central northern Venezuela (Rancho 

 Grande). East to northwestern Venezuela (Rancho Grande, Merida, 

 and Paramo de Tama) ; the eastern slope of the Andes in Colombia 

 (Pamplona, Bogota, and San Antonio) ; Ecuador (Mount Sumaca, 

 Machay, and Zamora) ; and Peru (Chinchao and Huambo). South 

 to central Peru (Huambo and Anquimarca). West to western Peru 

 (Anquimarca and Tambillo) ; Ecuador (Ambato, Quito, and Par- 



