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