Argentina, Aruba, Bahamas, Belize, Bolivia, Brazil, Canada (B), Cayman Islands, Colombia, Costa Rica, Cuba, Ecuador, El Salvador, French Guiana, Guatemala, Honduras, Mexico, Netherlands Antilles, Nicaragua, Panama, Peru, St Pierre and Miquelon (P), Turks and Caicos Islands, USA (B), Venezuela.
Vagrant to Barbados, Jamaica, Virgin Islands (U.S.).
Breeds south-eastern Canada (Saskatchewan east to Maritime Provinces) and southern in USA to south-central Texas, Gulf Coast states and central Florida. Winters mainly from Colombia and Venezuela south to northern Bolivia and western Brazil, casually as far northern as Costa Rica.
 
Population
Estimated population is 6,000,000 (2010).