WILSON PHALAKOPE 35 



migration in August. Some individuals wander eastward to the 

 Atlantic coast, but the main flight is southward along both coasts of 

 Mexico to their winter home in Argentina, Chile, and Patagonia. 



DISTRIBUTION 



Range. — North and South America. 



Breeding range. — The breeding range of Wilson's phalarope ex- 

 tends north to Washington (Bumping Lake) ; Alberta (Alix, Buf- 

 falo Lake, and Edmonton) ; Saskatchewan (Osier, Quill Lake, and 

 Indian Head) ; Manitoba (Moose Mountain, Brandon, and Shoal 

 Lake) ; North Dakota (Pembina) ; Minnesota (probably Leech 

 Lake) ; Michigan (St. Clair Flats) ; and southern Ontario (Dunn- 

 ville). East to southern Ontario (Dunnville) ; northern Indiana 

 (Lake County) ; northern Illinois (West Northfield, Fox River, and 

 Calumet Marshes); and formerly Missouri (Pierce). South to 

 Indiana (Whiting) ; Missouri (formerly Pierce) ; rarely southern 

 Kansas (Meade County) ; Colorado (Sterling, Barr, and San Luis 

 Valley) ; southwestern Wyoming (Fort Bridger) ; northern Utah 

 (Salt Lake City) ; Nevada (Washoe Lake) ; and California (Tahoe 

 Lake and Los Banos). West to California (Los Banos, Lassen 

 County, and Tule Lake) ; Oregon (Klamath Lake) ; and Washington 

 (Conconully and Bumping Lake). It also has been reported in 

 summer from southern California (Furnace Creek and Tulare Lake) 

 and from central Mexico (Lerina). 



Winter range. — The winter range of the Wilson phalarope is very 

 imperfectly known. The few records available come chiefly from 

 South America, but it also has been reported as wintering in Mexico 

 (Mayorazgo, Ixtapalapa, and the City of Mexico) ; rarely southern 

 Texas (Corpus Christi) ; and in southern California (Riverside). 

 South American specimens have been taken or observed at this sea- 

 son in the Falkland Islands; Patagonia (Chupat) ; Argentina (Men- 

 doza, Buenos Aires, Tucuman, Barracas al Sud, and Missiones) ; 

 Chile (Valdivia) ; Bolivia (Alto Paraguay) ; Peru (Ingapirca) ; and 

 Brazil (Caicara). 



Spring migration. — Early dates of spring arrival are: Missouri, 

 St. Louis, April 22, Corning, April 23, Independence, May 1, and 

 Marionville, May 2; Illinois, Quincy, April 20, Chicago, April 21, 

 Liter, April 27, Fernwood, May 1, and South Englewood, May 3; 

 Indiana, Waterloo, April 27, and Kouts, April 30; Michigan, Ann 

 Arbor, April 1, Detroit, May 1, and Iron Mountain, May 2; Ontario, 

 Toronto, May 25; Iowa, Emmetsburg, April 24, Gilbert Station, 

 April 27, Marshalltown, May 2, Sioux City, May 5, and Keokuk, 

 May 6; Wisconsin, Delavan, April 26, North Freedom, April 29, 

 and Whitewater, May 6; Minnesota, Heron Lake, May 8, Wilder, 



