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