Native to:
Amur,
Andaman Is.,
Angola,
Assam,
Bahamas,
Bangladesh,
Benin,
Bismarck Archipelago,
Borneo,
Botswana,
Brazil Northeast,
Burkina,
Burundi,
Cambodia,
Cameroon,
Cape Provinces,
Caprivi Strip,
Caroline Is.,
Central African Repu,
Chad,
China North-Central,
China South-Central,
China Southeast,
Chita,
Comoros,
Cuba,
Djibouti,
Dominican Republic,
East Himalaya,
Ecuador,
Egypt,
Eritrea,
Ethiopia,
Fiji,
Gambia,
Ghana,
Guinea,
Guinea-Bissau,
Hainan,
Haiti,
Hawaii,
India,
Inner Mongolia,
Ivory Coast,
Jamaica,
Japan,
Jawa,
Kenya,
Korea,
KwaZulu-Natal,
Laos,
Leeward Is.,
Lesser Sunda Is.,
Madagascar,
Malawi,
Malaya,
Mali,
Maluku,
Manchuria,
Mauritania,
Mongolia,
Mozambique,
Mozambique Channel I,
Myanmar,
Namibia,
Nepal,
New Guinea,
Nicobar Is.,
Nigeria,
Northern Provinces,
Northern Territory,
Oman,
Pakistan,
Philippines,
Portugal,
Primorye,
Puerto Rico,
Queensland,
Rwanda,
Réunion,
Samoa,
Saudi Arabia,
Senegal,
Sierra Leone,
Socotra,
Solomon Is.,
Somalia,
South China Sea,
Spain,
Sri Lanka,
Sudan,
Sulawesi,
Sumatera,
Swaziland,
Taiwan,
Tanzania,
Thailand,
Tibet,
Togo,
Tonga,
Turkey,
Uganda,
Vanuatu,
Vietnam,
Wallis-Futuna Is.,
West Himalaya,
Western Australia,
Yemen,
Zambia,
Zaïre,
Zimbabwe
Introduced into:
Florida