Native to:
Afghanistan,
Albania,
Aldabra,
Algeria,
Amur,
Andaman Is.,
Angola,
Assam,
Austria,
Baleares,
Baltic States,
Bangladesh,
Belarus,
Belgium,
Borneo,
Botswana,
Bulgaria,
Burundi,
Cabinda,
Cambodia,
Cameroon,
Cape Provinces,
Central African Repu,
Central European Rus,
China North-Central,
China South-Central,
China Southeast,
Comoros,
Congo,
Corse,
Czechoslovakia,
Denmark,
Djibouti,
East European Russia,
East Himalaya,
Eritrea,
Ethiopia,
Fiji,
France,
Free State,
Gabon,
Germany,
Ghana,
Great Britain,
Greece,
Gulf of Guinea Is.,
Hainan,
Hungary,
India,
Inner Mongolia,
Iran,
Italy,
Ivory Coast,
Japan,
Jawa,
Kenya,
Khabarovsk,
Korea,
Kriti,
Krym,
KwaZulu-Natal,
Laos,
Lebanon-Syria,
Lesotho,
Lesser Sunda Is.,
Madagascar,
Malawi,
Malaya,
Maluku,
Mauritius,
Morocco,
Mozambique,
Myanmar,
Namibia,
Nepal,
Netherlands,
New Guinea,
New South Wales,
Nicobar Is.,
Nigeria,
North Caucasus,
Northern Provinces,
Northern Territory,
Northwest European R,
Norway,
Pakistan,
Palestine,
Philippines,
Poland,
Portugal,
Primorye,
Qinghai,
Queensland,
Romania,
Rwanda,
Réunion,
Saudi Arabia,
Seychelles,
Sicilia,
Society Is.,
Somalia,
South European Russi,
Spain,
Sri Lanka,
Sudan,
Sulawesi,
Sumatera,
Swaziland,
Sweden,
Switzerland,
Taiwan,
Tanzania,
Thailand,
Tibet,
Transcaucasus,
Tuamotu,
Turkey,
Turkey-in-Europe,
Uganda,
Ukraine,
Vietnam,
West Himalaya,
Western Australia,
Yemen,
Yugoslavia,
Zambia,
Zaïre,
Zimbabwe
Introduced into:
British Columbia,
California