Native to:
Afghanistan,
Algeria,
Andaman Is.,
Angola,
Assam,
Bangladesh,
Benin,
Botswana,
Burkina,
Burundi,
Cambodia,
Cameroon,
Central African Republic,
Chad,
China South-Central,
China Southeast,
Comoros,
East Himalaya,
Egypt,
Ethiopia,
Gambia,
Ghana,
Guinea,
Guinea-Bissau,
Hainan,
India,
Japan,
Jawa,
Kenya,
KwaZulu-Natal,
Laos,
Lesser Sunda Is.,
Madagascar,
Malawi,
Malaya,
Mali,
Mauritania,
Mauritius,
Morocco,
Mozambique,
Nansei-shoto,
New Guinea,
Niger,
Nigeria,
Pakistan,
Palestine,
Philippines,
Rwanda,
Réunion,
Senegal,
Sri Lanka,
Sudan,
Sulawesi,
Swaziland,
Taiwan,
Tanzania,
Thailand,
Uganda,
Vietnam,
West Himalaya,
Zambia,
Zaïre
Introduced into:
Brazil Northeast,
Florida,
Georgia,
Trinidad-Tobago