Native to:
Amur,
Andaman Is.,
Angola,
Assam,
Bangladesh,
Benin,
Bismarck Archipelago,
Bolivia,
Borneo,
Brazil North,
Brazil Northeast,
Brazil Southeast,
Brazil West-Central,
Burkina,
Burundi,
Cambodia,
Cameroon,
Caprivi Strip,
Caroline Is.,
Central African Repu,
Chad,
China North-Central,
China South-Central,
China Southeast,
Congo,
East Himalaya,
Equatorial Guinea,
Ethiopia,
Gabon,
Ghana,
Guinea,
Guinea-Bissau,
Guyana,
Hainan,
India,
Inner Mongolia,
Iran,
Ivory Coast,
Japan,
Jawa,
Kenya,
Khabarovsk,
Korea,
KwaZulu-Natal,
Laos,
Lesser Sunda Is.,
Madagascar,
Malawi,
Malaya,
Mali,
Manchuria,
Mozambique,
Myanmar,
Namibia,
Nansei-shoto,
Nepal,
New Guinea,
New South Wales,
Nicobar Is.,
Nigeria,
Northern Provinces,
Northern Territory,
Ogasawara-shoto,
Pakistan,
Paraguay,
Philippines,
Primorye,
Queensland,
Rwanda,
Senegal,
Sierra Leone,
Somalia,
Sri Lanka,
Sudan,
Swaziland,
Taiwan,
Tanzania,
Thailand,
Tibet,
Togo,
Uganda,
Vanuatu,
Venezuela,
Vietnam,
West Himalaya,
Western Australia,
Yemen,
Zambia,
Zaïre,
Zimbabwe
Introduced into:
Alabama,
Arkansas,
Brazil South,
Canary Is.,
Colombia,
Cook Is.,
Costa Rica,
Cuba,
Delaware,
District of Columbia,
Dominican Republic,
El Salvador,
Florida,
Georgia,
Guatemala,
Haiti,
Hawaii,
Honduras,
Kentucky,
Louisiana,
Madeira,
Maryland,
Mexico Gulf,
Mexico Southeast,
Mexico Southwest,
Mississippi,
New Caledonia,
New York,
Nicaragua,
North Carolina,
Oregon,
Panamá,
Puerto Rico,
Samoa,
South Carolina,
Suriname,
Tennessee,
Texas,
Trinidad-Tobago,
Tuamotu,
Virginia,
Washington