Native to:
Andaman Is.,
Angola,
Assam,
Bangladesh,
Belize,
Benin,
Bismarck Archipelago,
Bolivia,
Borneo,
Botswana,
Brazil North,
Brazil Northeast,
Brazil West-Central,
Burkina,
Burundi,
Cambodia,
Cameroon,
Cape Provinces,
Caprivi Strip,
Caroline Is.,
Central African Republic,
Central American Pacific Is.,
Chad,
China South-Central,
China Southeast,
Christmas I.,
Colombia,
Comoros,
Congo,
Cook Is.,
Costa Rica,
Cuba,
Dominican Republic,
East Himalaya,
Ecuador,
El Salvador,
Equatorial Guinea,
Eritrea,
Ethiopia,
Fiji,
Free State,
French Guiana,
Gabon,
Gambia,
Ghana,
Guatemala,
Guinea,
Guinea-Bissau,
Guyana,
Hainan,
Haiti,
Hawaii,
Honduras,
India,
Ivory Coast,
Jamaica,
Japan,
Jawa,
Kenya,
KwaZulu-Natal,
Laos,
Leeward Is.,
Lesotho,
Lesser Sunda Is.,
Liberia,
Madagascar,
Malawi,
Malaya,
Maldives,
Mali,
Maluku,
Marianas,
Marshall Is.,
Mauritania,
Mexico Central,
Mexico Gulf,
Mexico Northwest,
Mexico Southeast,
Mexico Southwest,
Mozambique,
Myanmar,
Namibia,
Nansei-shoto,
Nepal,
New Caledonia,
New Guinea,
Nicaragua,
Nicobar Is.,
Niger,
Nigeria,
Northern Provinces,
Northern Territory,
Panamá,
Peru,
Philippines,
Phoenix Is.,
Puerto Rico,
Queensland,
Rwanda,
Samoa,
Santa Cruz Is.,
Senegal,
Sierra Leone,
Solomon Is.,
Somalia,
South China Sea,
Sri Lanka,
Sudan,
Sulawesi,
Sumatera,
Suriname,
Swaziland,
Taiwan,
Tanzania,
Thailand,
Tibet,
Togo,
Tonga,
Trinidad-Tobago,
Tubuai Is.,
Uganda,
Vanuatu,
Venezuela,
Vietnam,
Wallis-Futuna Is.,
Windward Is.,
Zambia,
Zaïre,
Zimbabwe
Introduced into:
Mauritius