Native to:
Afghanistan,
Alabama,
Albania,
Alberta,
Algeria,
Angola,
Argentina Northeast,
Argentina Northwest,
Argentina South,
Arizona,
Arkansas,
Aruba,
Assam,
Azores,
Bahamas,
Baleares,
Bangladesh,
Belize,
Benin,
Bolivia,
Borneo,
Botswana,
Brazil North,
Brazil Northeast,
Brazil South,
Brazil Southeast,
Brazil West-Central,
Bulgaria,
Burkina,
California,
Cameroon,
Canary Is.,
Cape Provinces,
Cape Verde,
Cayman Is.,
Central African Republic,
Chad,
Chile Central,
Chile North,
Chile South,
China North-Central,
China South-Central,
China Southeast,
Colombia,
Colorado,
Connecticut,
Costa Rica,
Cuba,
Cyprus,
Delaware,
District of Columbia,
Djibouti,
Dominican Republic,
East Aegean Is.,
Ecuador,
Egypt,
El Salvador,
Eritrea,
Ethiopia,
Florida,
France,
Free State,
French Guiana,
Galápagos,
Georgia,
Ghana,
Greece,
Guatemala,
Gulf of Guinea Is.,
Gulf States,
Guyana,
Haiti,
Hawaii,
Honduras,
Idaho,
Illinois,
India,
Indiana,
Inner Mongolia,
Iowa,
Iran,
Iraq,
Italy,
Jamaica,
Jawa,
Kansas,
Kazakhstan,
Kentucky,
Kenya,
Kriti,
Krym,
Kuwait,
KwaZulu-Natal,
Laos,
Lebanon-Syria,
Leeward Is.,
Lesotho,
Lesser Sunda Is.,
Libya,
Line Is.,
Louisiana,
Madeira,
Maine,
Malawi,
Malaya,
Mali,
Maluku,
Maryland,
Massachusetts,
Mauritania,
Mexico Central,
Mexico Gulf,
Mexico Northeast,
Mexico Northwest,
Mexico Southeast,
Mexico Southwest,
Michigan,
Minnesota,
Mississippi,
Missouri,
Montana,
Morocco,
Mozambique,
Myanmar,
Namibia,
Nebraska,
Nepal,
Netherlands Antilles,
Nevada,
New Guinea,
New Hampshire,
New Jersey,
New Mexico,
New South Wales,
New York,
Nicaragua,
Niger,
Nigeria,
North Carolina,
North Caucasus,
North Dakota,
Northern Provinces,
Northern Territory,
Ohio,
Oklahoma,
Oman,
Ontario,
Oregon,
Pakistan,
Palestine,
Panamá,
Paraguay,
Pennsylvania,
Peru,
Philippines,
Portugal,
Puerto Rico,
Queensland,
Rhode I.,
Rwanda,
Sardegna,
Saskatchewan,
Saudi Arabia,
Senegal,
Sicilia,
Sinai,
Socotra,
Solomon Is.,
Somalia,
South Australia,
South Carolina,
South Dakota,
Southwest Caribbean,
Spain,
Sri Lanka,
Sudan,
Sulawesi,
Sumatera,
Suriname,
Swaziland,
Tadzhikistan,
Taiwan,
Tanzania,
Tennessee,
Texas,
Thailand,
Togo,
Transcaucasus,
Trinidad-Tobago,
Tunisia,
Turkey,
Turkey-in-Europe,
Turkmenistan,
Turks-Caicos Is.,
Uganda,
Uruguay,
Utah,
Uzbekistan,
Venezuela,
Venezuelan Antilles,
Vermont,
Victoria,
Vietnam,
Virginia,
Washington,
West Himalaya,
Western Australia,
Windward Is.,
Wisconsin,
Wyoming,
Xinjiang,
Yemen,
Yugoslavia,
Zambia,
Zaïre,
Zimbabwe
Introduced into:
Alaska,
Aldabra,
Altay,
Amur,
Andaman Is.,
Ascension,
Austria,
Baltic States,
Belarus,
Belgium,
Bermuda,
British Columbia,
Burundi,
Cambodia,
Caroline Is.,
Central European Russia,
Chagos Archipelago,
Chita,
Christmas I.,
Comoros,
Congo,
Cook Is.,
Corse,
Czechoslovakia,
Denmark,
East European Russia,
East Himalaya,
Fiji,
Finland,
Gabon,
Gambia,
Germany,
Gilbert Is.,
Great Britain,
Guinea,
Guinea-Bissau,
Hainan,
Hungary,
Ireland,
Irkutsk,
Ivory Coast,
Japan,
Juan Fernández Is.,
Kazan-retto,
Khabarovsk,
Kirgizstan,
Korea,
Krasnoyarsk,
Kuril Is.,
Labrador,
Laccadive Is.,
Liberia,
Maldives,
Manchuria,
Manitoba,
Marianas,
Marquesas,
Marshall Is.,
Mauritius,
Mexican Pacific Is.,
Mongolia,
Nansei-shoto,
Nauru,
Netherlands,
New Brunswick,
New Caledonia,
New Zealand North,
New Zealand South,
Newfoundland,
Nicobar Is.,
Niue,
Norfolk Is.,
North European Russia,
Northwest European Russia,
Northwest Territories,
Norway,
Nova Scotia,
Nunavut,
Ogasawara-shoto,
Phoenix Is.,
Pitcairn Is.,
Poland,
Primorye,
Prince Edward I.,
Qinghai,
Québec,
Rodrigues,
Romania,
Réunion,
Samoa,
Seychelles,
Sierra Leone,
Society Is.,
South China Sea,
South European Russia,
St.Helena,
Sweden,
Switzerland,
Tasmania,
Tibet,
Tokelau-Manihiki,
Tonga,
Tristan da Cunha,
Tuamotu,
Tubuai Is.,
Tuva,
Ukraine,
Vanuatu,
Wake I.,
West Siberia,
West Virginia,
Western Sahara,
Yakutskiya