Native to:
Afghanistan,
Albania,
Algeria,
Altay,
Amur,
Angola,
Assam,
Austria,
Azores,
Baleares,
Baltic States,
Bangladesh,
Belarus,
Belgium,
Bulgaria,
Burundi,
Cambodia,
Cameroon,
Canary Is.,
Cape Provinces,
Central African Repu,
Central European Rus,
China North-Central,
China South-Central,
China Southeast,
Chita,
Corse,
Cyprus,
Czechoslovakia,
Denmark,
East Aegean Is.,
East European Russia,
East Himalaya,
Eritrea,
Ethiopia,
Finland,
France,
Free State,
Germany,
Great Britain,
Greece,
Guinea,
Gulf of Guinea Is.,
Gulf States,
Hainan,
Hungary,
India,
Inner Mongolia,
Iran,
Iraq,
Ireland,
Irkutsk,
Italy,
Japan,
Jawa,
Kazakhstan,
Kenya,
Kirgizstan,
Krasnoyarsk,
Kriti,
Krym,
Kuwait,
KwaZulu-Natal,
Lebanon-Syria,
Lesotho,
Lesser Sunda Is.,
Libya,
Madagascar,
Malawi,
Mali,
Manchuria,
Mongolia,
Morocco,
Mozambique,
Myanmar,
Nepal,
Netherlands,
Nigeria,
North Caucasus,
North European Russi,
Northern Provinces,
Northwest European R,
Norway,
Oman,
Pakistan,
Palestine,
Poland,
Portugal,
Primorye,
Qinghai,
Romania,
Sardegna,
Saudi Arabia,
Sicilia,
Sinai,
Somalia,
South European Russi,
Spain,
Sri Lanka,
Sudan,
Swaziland,
Sweden,
Switzerland,
Tadzhikistan,
Taiwan,
Tanzania,
Thailand,
Tibet,
Transcaucasus,
Tunisia,
Turkey,
Turkey-in-Europe,
Turkmenistan,
Uganda,
Ukraine,
Uzbekistan,
Vietnam,
West Himalaya,
West Siberia,
Xinjiang,
Yemen,
Yugoslavia,
Zambia,
Zaïre,
Zimbabwe
Extinct in:
Egypt
Introduced into:
Argentina Northeast,
Argentina Northwest,
Brazil South,
Buryatiya,
Connecticut,
Delaware,
Guatemala,
Indiana,
Kamchatka,
Korea,
Laos,
Leeward Is.,
Maine,
Maryland,
Massachusetts,
Michigan,
Minnesota,
Montana,
New Brunswick,
New Jersey,
New York,
Newfoundland,
Nova Scotia,
Ohio,
Ontario,
Pennsylvania,
Philippines,
Québec,
Trinidad-Tobago,
Venezuela,
Vermont,
Virginia,
Washington,
West Virginia,
Wisconsin