Native to:
Alabama,
Alberta,
Amur,
Andaman Is.,
Angola,
Antipodean Is.,
Argentina Northeast,
Argentina Northwest,
Argentina South,
Arizona,
Arkansas,
Assam,
Azores,
Bahamas,
Baltic States,
Bangladesh,
Belarus,
Belgium,
Belize,
Benin,
Bolivia,
Borneo,
Botswana,
Brazil North,
Brazil Northeast,
Brazil South,
Brazil Southeast,
Brazil West-Central,
British Columbia,
Burkina,
Burundi,
California,
Cambodia,
Cameroon,
Cape Provinces,
Caprivi Strip,
Central African Republic,
Chad,
Chatham Is.,
Chile Central,
Chile North,
Chile South,
China North-Central,
China South-Central,
China Southeast,
Chita,
Colombia,
Colorado,
Comoros,
Congo,
Connecticut,
Costa Rica,
Cuba,
Delaware,
Denmark,
District of Columbia,
Dominican Republic,
East Himalaya,
Ecuador,
El Salvador,
Equatorial Guinea,
Eritrea,
Ethiopia,
Falkland Is.,
Finland,
Florida,
France,
Free State,
French Guiana,
Føroyar,
Gabon,
Galápagos,
Georgia,
Germany,
Ghana,
Great Britain,
Guatemala,
Guinea,
Gulf of Guinea Is.,
Hainan,
Haiti,
Hawaii,
Honduras,
Idaho,
Illinois,
India,
Indiana,
Inner Mongolia,
Iowa,
Ireland,
Ivory Coast,
Jamaica,
Japan,
Jawa,
Juan Fernández Is.,
Kamchatka,
Kansas,
Kentucky,
Kenya,
Kermadec Is.,
Khabarovsk,
Korea,
Kuril Is.,
KwaZulu-Natal,
Labrador,
Laos,
Leeward Is.,
Lesotho,
Lesser Sunda Is.,
Louisiana,
Madagascar,
Madeira,
Magadan,
Maine,
Malawi,
Malaya,
Mali,
Manchuria,
Manitoba,
Maryland,
Massachusetts,
Mauritius,
Mexican Pacific Is.,
Mexico Central,
Mexico Gulf,
Mexico Northeast,
Mexico Northwest,
Mexico Southeast,
Mexico Southwest,
Michigan,
Minnesota,
Mississippi,
Missouri,
Montana,
Morocco,
Mozambique,
Myanmar,
Namibia,
Nansei-shoto,
Nebraska,
Nepal,
Netherlands,
Nevada,
New Brunswick,
New Guinea,
New Hampshire,
New Jersey,
New Mexico,
New South Wales,
New York,
New Zealand North,
New Zealand South,
Newfoundland,
Nicaragua,
Nicobar Is.,
Niger,
Nigeria,
Norfolk Is.,
North Carolina,
North Dakota,
North European Russia,
Northern Provinces,
Northern Territory,
Northwest European Russia,
Northwest Territories,
Norway,
Nova Scotia,
Nunavut,
Ogasawara-shoto,
Ohio,
Oklahoma,
Oman,
Ontario,
Oregon,
Panamá,
Paraguay,
Pennsylvania,
Peru,
Philippines,
Poland,
Portugal,
Primorye,
Prince Edward I.,
Puerto Rico,
Queensland,
Québec,
Rhode I.,
Rodrigues,
Rwanda,
Réunion,
Sakhalin,
Saskatchewan,
Senegal,
Sierra Leone,
Somalia,
South Australia,
South Carolina,
South Dakota,
Spain,
Sri Lanka,
St.Helena,
Sudan,
Sulawesi,
Sumatera,
Suriname,
Swaziland,
Sweden,
Taiwan,
Tanzania,
Tasmania,
Tennessee,
Texas,
Thailand,
Tibet,
Togo,
Trinidad-Tobago,
Tubuai Is.,
Turks-Caicos Is.,
Uganda,
Uruguay,
Utah,
Vanuatu,
Venezuela,
Vermont,
Victoria,
Vietnam,
Virginia,
Washington,
West Himalaya,
West Virginia,
Western Australia,
Windward Is.,
Wisconsin,
Wyoming,
Yakutskiya,
Zambia,
Zaïre,
Zimbabwe
Introduced into:
Austria,
Canary Is.,
Fiji,
Italy,
Samoa,
South European Russia,
South Georgia,
Tristan da Cunha,
Tunisia