Native to:
Andaman Is.,
Angola,
Assam,
Bangladesh,
Belize,
Benin,
Bismarck Archipelago,
Bolivia,
Borneo,
Botswana,
Brazil North,
Brazil Northeast,
Brazil Southeast,
Brazil West-Central,
Burkina,
Burundi,
Cabinda,
Cambodia,
Cameroon,
Cape Provinces,
Caprivi Strip,
Caroline Is.,
Central African Republic,
Chad,
China South-Central,
China Southeast,
Colombia,
Comoros,
Congo,
Costa Rica,
Djibouti,
East Himalaya,
Ecuador,
El Salvador,
Eritrea,
Ethiopia,
Fiji,
Florida,
French Guiana,
Gabon,
Gambia,
Ghana,
Guatemala,
Guinea,
Guinea-Bissau,
Gulf of Guinea Is.,
Guyana,
Hainan,
Honduras,
India,
Ivory Coast,
Jawa,
Kenya,
KwaZulu-Natal,
Laos,
Leeward Is.,
Lesser Sunda Is.,
Liberia,
Madagascar,
Malawi,
Malaya,
Mali,
Maluku,
Mauritania,
Mexico Gulf,
Mexico Southeast,
Mexico Southwest,
Mozambique,
Myanmar,
Namibia,
Nepal,
New Guinea,
New South Wales,
Nicaragua,
Nicobar Is.,
Niger,
Nigeria,
Niue,
Northern Provinces,
Northern Territory,
Oman,
Panamá,
Paraguay,
Peru,
Philippines,
Queensland,
Rwanda,
Samoa,
Santa Cruz Is.,
Senegal,
Sierra Leone,
Socotra,
Solomon Is.,
Somalia,
Sri Lanka,
Sudan,
Sulawesi,
Sumatera,
Suriname,
Swaziland,
Taiwan,
Tanzania,
Thailand,
Tibet,
Togo,
Tonga,
Trinidad-Tobago,
Uganda,
Vanuatu,
Venezuela,
Venezuelan Antilles,
Vietnam,
Wallis-Futuna Is.,
Western Australia,
Windward Is.,
Yemen,
Zambia,
Zaïre,
Zimbabwe
Introduced into:
Cuba,
Hawaii,
Jamaica,
Pakistan,
Puerto Rico