Native to:
Angola,
Assam,
Bangladesh,
Benin,
Borneo,
Botswana,
Burkina,
Burundi,
Cabinda,
Cambodia,
Cameroon,
Cape Provinces,
Cape Verde,
Caprivi Strip,
Central African Republic,
Chad,
China South-Central,
China Southeast,
Christmas I.,
Congo,
Djibouti,
East Himalaya,
Eritrea,
Ethiopia,
Fiji,
Free State,
Gabon,
Gambia,
Ghana,
Guinea,
Guinea-Bissau,
Gulf of Guinea Is.,
India,
Ivory Coast,
Jawa,
Kenya,
KwaZulu-Natal,
Laos,
Lesser Sunda Is.,
Liberia,
Madagascar,
Malawi,
Malaya,
Mali,
Maluku,
Mauritania,
Mozambique,
Myanmar,
Namibia,
Nepal,
New Guinea,
New South Wales,
Niger,
Nigeria,
Northern Provinces,
Northern Territory,
Pakistan,
Philippines,
Queensland,
Rwanda,
Saudi Arabia,
Senegal,
Sierra Leone,
Society Is.,
Solomon Is.,
Somalia,
South Australia,
Sri Lanka,
Sudan,
Sulawesi,
Sumatera,
Swaziland,
Taiwan,
Tanzania,
Thailand,
Tibet,
Togo,
Tonga,
Uganda,
Vanuatu,
Vietnam,
West Himalaya,
Western Australia,
Yemen,
Zambia,
Zaïre,
Zimbabwe
Extinct in:
Socotra
Introduced into:
Alabama,
Andaman Is.,
Argentina Northeast,
Argentina Northwest,
Aruba,
Ascension,
Bahamas,
Belize,
Bermuda,
Bolivia,
Brazil North,
Brazil Northeast,
Brazil South,
Brazil Southeast,
Brazil West-Central,
Caroline Is.,
Cayman Is.,
Central American Pacific Is.,
Colombia,
Comoros,
Connecticut,
Cook Is.,
Costa Rica,
Cuba,
Dominican Republic,
El Salvador,
Florida,
Galápagos,
Georgia,
Guatemala,
Haiti,
Hawaii,
Honduras,
Jamaica,
Korea,
Leeward Is.,
Louisiana,
Marianas,
Marquesas,
Mauritius,
Mexico Northwest,
Mexico Southwest,
Netherlands Antilles,
New Caledonia,
New Mexico,
Nicobar Is.,
Niue,
Oklahoma,
Oman,
Palestine,
Panamá,
Paraguay,
Pennsylvania,
Peru,
Puerto Rico,
Rodrigues,
Réunion,
Samoa,
Southwest Caribbean,
Texas,
Trinidad-Tobago,
Tuamotu,
Tunisia,
Turks-Caicos Is.,
Venezuela,
Venezuelan Antilles,
Windward Is.