Anguilla,Antigua and Barbuda,Belize,Brazil,Colombia,Costa Rica,Dominica,Ecuador - mainland,El Salvador,French Guiana, Grenada,Guatemala,Guyana,Honduras,Mexico,Netherlands Antilles,Nicaragua,Panama(I),Saint Lucia,Saint Vincent and the Grenadines, Suriname,Trinidad and Tobago,Venezuela,
IOC 13.1 Subspecies
Group
Subspecies
Breeding Range
gracilis
s Mexico to Honduras and El Salvador
antelius
ne, e Brazil
gilvus
Suriname and French Guiana
melanopterus
n Colombia, Venezuela, Guyana and n Brazil
tolimensis
e El Salvador to c Panama, w, c Colombia to n Ecuador
rostratus
islands off n Venezuela
tobagensis
Trinidad and Tobago
antillarum
Lesser Antilles s from Antigua
leucophaeus
Yucatán Pen. (se Mexico) and Cozumel I. (off se Mexico)
Africa (entire continent rather than south of Sahara)
AN
Antarctica
AO
Atlantic Ocean
AU
Australasia (Wallacea (Indonesian islands east of Wallace's line), New Guinea and its islands, Australia, New Zealand and its subantarctic islands, the Solomons, New Caledonia, and Vanuatu)
PAL
Eurasia (Europe, Asia from the Middle East through central Asia north of the Himalayas, Siberia and northern China to Japan)
IO
Indian Ocean
LA
Latin America (Middle and South America)
MA
Middle America (Mexico through Panama)
NA
North America (includes the Caribbean)
NO
Northern oceans
OR
Oriental Region (South Asia from Pakistan to Taiwan, plus Southeast Asia, the Philippines, and Greater Sundas)