Anguilla, Antigua and Barbuda, Bahamas, Barbados, Belize, Bermuda, Bolivia (B), Canada (B) (P), Cayman Islands, Chile (B), Colombia, Costa Rica, Cuba, Dominica, Dominican Republic, Ecuador (PE), El Salvador, Guadeloupe, Guatemala, Haiti, Honduras, Jamaica (B), Martinique, Mexico, Montserrat, Nicaragua, Panama, Puerto Rico, St Kitts and Nevis, St Lucia, St Pierre and Miquelon (P), St Vincent and The Grenadines, Turks and Caicos Islands, USA (B), Venezuela, Virgin Islands (British) (NB), Virgin Islands (U.S.) (NB).
Vagrant to Greenland, Grenada, Iceland, Ireland, Portugal, Trinidad and Tobago.
Population
Estimated population is 6,000,000 (2010).
Proposed subspecies grenadensis included in nominate.
The following 2 subspecies are recognised:
americana Gmelin, 1789 - South-eastern Alaska east to Nova Scotia, and south to West Indies, Nicaragua and Costa Rica. Winters to west to Hawaii and south to Panama.
columbiana Chapman, 1914 - Colombia and northern Ecuador.