Native to:
Afghanistan,
Andaman Is.,
Angola,
Argentina Northeast,
Assam,
Bahamas,
Bangladesh,
Belize,
Benin,
Bismarck Archipelago,
Bolivia,
Borneo,
Botswana,
Brazil North,
Brazil Northeast,
Brazil South,
Brazil Southeast,
Brazil West-Central,
Burkina,
Burundi,
Cabinda,
Cambodia,
Cameroon,
Cape Provinces,
Caprivi Strip,
Caroline Is.,
Cayman Is.,
Central African Repu,
Central American Pac,
Chad,
China North-Central,
China South-Central,
China Southeast,
Colombia,
Comoros,
Congo,
Costa Rica,
Cuba,
Dominican Republic,
East Himalaya,
Ecuador,
El Salvador,
Equatorial Guinea,
Eritrea,
Ethiopia,
Fiji,
Florida,
French Guiana,
Gabon,
Gambia,
Ghana,
Guatemala,
Guinea,
Guinea-Bissau,
Gulf of Guinea Is.,
Guyana,
Hainan,
Haiti,
Honduras,
India,
Iran,
Ivory Coast,
Jamaica,
Jawa,
Kenya,
Korea,
KwaZulu-Natal,
Laos,
Leeward Is.,
Lesser Sunda Is.,
Liberia,
Madagascar,
Malawi,
Malaya,
Mali,
Maluku,
Marianas,
Mauritania,
Mexico Central,
Mexico Gulf,
Mexico Northeast,
Mexico Southeast,
Mexico Southwest,
Mozambique,
Myanmar,
Namibia,
Nansei-shoto,
Nepal,
New Caledonia,
New Guinea,
Nicaragua,
Nicobar Is.,
Nigeria,
Northern Provinces,
Northern Territory,
Pakistan,
Panamá,
Paraguay,
Peru,
Philippines,
Puerto Rico,
Queensland,
Rwanda,
Senegal,
Sierra Leone,
Solomon Is.,
Somalia,
Southwest Caribbean,
Sri Lanka,
Sudan,
Sulawesi,
Sumatera,
Suriname,
Swaziland,
Taiwan,
Tanzania,
Thailand,
Tibet,
Togo,
Tonga,
Trinidad-Tobago,
Uganda,
Uruguay,
Vanuatu,
Venezuela,
Vietnam,
West Himalaya,
Windward Is.,
Zambia,
Zaïre,
Zimbabwe
Introduced into:
Free State,
Iraq,
Niger,
Oman,
Palestine