Argentina, Belize, Bolivia, Brazil, Canada (B), Colombia, Costa Rica, Ecuador, El Salvador, Guatemala, Honduras, Mexico, Nicaragua, Panama, Paraguay, Peru, Uruguay (NB), USA (B), Venezuela.
Vagrant to Chile, Dominican Republic, Norway, Trinidad and Tobago.
Western and central North America from Alaska south-east to Minnesota, and south to northern Mexico. Winters mostly in South America, especially in northern Argentina, southern Brazil and Paraguay; also some birds in southern and western USA.
 
Rarity Status
Currently this species is not classified as a rarity in this country OR information has not been updated.
Population
Estimated population is 490,000 (2010).