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A photo of a Neotropic Cormorant (Nannopterum brasilianum)
Neotropic Cormorant

Neotropic Cormorant

Nannopterum brasilianum

The neotropic cormorant or olivaceous cormorant (Nannopterum brasilianum) is a medium-sized cormorant found throughout the American tropics and subtropics, from the middle Rio Grande and the Gulf and Californian coasts of the United States south through Mexico and Central America to southern South America, where it is called by the indigenous name of biguá. It also breeds on the Bahamas, Cuba and Trinidad. It can be found both at coasts (including some mangrove areas) and on inland waters. There are at least two subspecies: N. b. mexicanum from Nicaragua northwards and N. b. brasilianum further south. In Peru the neotropic cormorant is used by the Uru people for fishing. This bird is 64 cm (25 in) long with a 100 cm (39 in) wingspan. Adults males weigh from 1.1 to 1.5 kg (2.4 to 3.3 lb), adult females 50 to 100 g (1.8 to 3.5 oz) less. Birds of the southern populations tend to be bigger than the more northerly birds. It is small and slender, especially compared to the larger, heavier-looking double-crested cormorant. It has a long tail and frequently holds its neck in an S-shape. Adult plumage is mainly black, with a yellow-brown throat patch. During breeding, white tufts appear on the sides of the head, there are scattered white filoplumes on the side of the head and the neck, and the throat patch develops a white edge. The upper wings are somewhat grayer than the rest of the body. Juveniles are brownish in color.
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Neotropic Cormorants on Birda

Photos

Sightings

A map showing the sighting location
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Jarred West
Sunday 24 Sep 2023 - 2:35pm
Peru
A photo of a Neotropic Cormorant photographed in Friend's House Peru
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Jarred West
Wednesday 20 Sep 2023 - 6:18pm
Peru
A map showing the sighting location
Profile picture for Bob Hunter
Bob Hunter
Tuesday 19 Sep 2023 - 1:00pm
United States
A map showing the sighting location
Profile picture for Nick Ivansson
Nick Ivansson
Sunday 17 Sep 2023 - 6:00pm
Argentina
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