346 BULLETIN 19 7, UNITED STATES NATIONAL MUSEUM 



DISTRIBUTION 



Range. — From southern Mackenzie to southern Brazil and Peru. 



Breeding range. — The red-eyed vireo breeds north to central north- 

 ern British Columbia (Fort Halkett) ; southern Mackenzie (mouth of 

 Nahanni Eiver, 8 miles below Fort Wrigley, and probably Blackwater 

 Eiver) ; central eastern Saskatchewan (south end of Reindeer Lake 

 and Pelican Narrows) ; north-central Manitoba (Norway House and 

 Oxford House) ; central Ontario (Lac Seul, Kapuskasing, Lake Abi- 

 tibi, and probably nearly to the south end of James Bay) ; southern 

 Quebec (upper St. Maurice Eiver, Quebec, Tadousac, St. Louis and 

 the Forillon Peninsula, Gaspe County, and Anticosti Island) ; and 

 possibly Newfoundland (St. Anthony and Cape Anguille). East to 

 Newfoundland (Cape Anguille) ; the Maritime Provinces of Canada 

 and the Atlantic Coast States south to central Florida (Kissirnmee 

 and Tarpon Springs). South to central Florida (Tarpon Springs) ; 

 and the Gulf States to northeastern Coahuila (Sabinas) ; southern 

 and central Texas (Houston, Kerrville, Fort Worth, and Decatur) ; 

 west-central Oklahoma (Cheyenne) ; central Kansas (Harper and St. 

 John) ; southern South Dakota (White Kiver and Eapid City) ; pos- 

 sibly nortlnvestern Wyoming (Newcastle) ; central and southwestern 

 Montana (Great Falls, Anaconda, and Missoula) ; northern Idaho 

 (Coeur d'Alene) ; and northern Oregon (Imnaha, Union, possibly 

 Oakridge, and Portland). Also breeding rarely in Colorado (proba- 

 by Clear Creek Valley and possibly Estes Park) ; and found in sum- 

 mer in northeastern Utah (near Jensen). West to western Oregon 

 (Portland) ; western Washington (Seattle and Bellingham) ; and 

 western British Columbia (Alberni and Beaver Creek, Vancouver Is- 

 land, Hagensborg, Hazelton, and Fort Halkett) . 



That the species is extending its range is evidenced by the fact that 

 previous to 1923 there was only a single record for Oregon, but it has 

 nested in that State since 1924. The first record for Utah was made 

 in 1937 and one was seen in Newfoundland in 1910 where the first speci- 

 men was taken in 1916. 



Winter range. — The winter home of the red-eyed vireo is in north- 

 ern South America, east at least to Ituribisi Eiver, British Guiana; 

 and the Eio Tapajoz in Brazil. South to Matto Grosso, Brazil 

 (Chapada), and possibly Bolivia and southern Peru (Sierra de Cara- 

 baya). West to central Peru (Sierra de Carabaya and Moyobamba) ; 

 and the interior valleys of Colombia (Santa Elena and the Santa 

 Marta region). 



Migration. — Late dates of spring departure are Ecuador — Eio Suno, 

 March 15. Colombia — Don Diego, May 3. Panama — Perme, April 

 17. Costa Eica — Basin of El General, April 21, Guatemala — 

 Chuntuque, April 26. British Honduras — Mountain Cow, April 17. 



