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 Phalacrocorax brasilianus  Neotropic Cormorant
(Previously known as Olivaceous Cormorant) These branch-nesting piscivores are fairly common breeding birds in the southwestern part of the Coastal Marsh Region, nesting in colonies with Roseate Spoonbills and herons.

photo Copyright © 1999 by Bill Bergen 
female or male

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 Phalacrocorax auritus  Double-crested Cormorant
This piscivorous species is common in the winter, is a late migrant, and breeds only rarely in Louisiana; therefore, birds seen in the spring are not necessarily breeding. The scatter of "Possible" records probably represents nonbreeding individuals

photo Copyright © 1999 by Brian Miller 
immature male or female

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 Phalacrocorax sp.  unidentified Neotropic or Double-crested Cormorant
These Atlas records represent either Neotropic or Double-crested cormorants whose identification was uncertain.

Neotropic (left inset) Copyright © 1999 by Bill Bergen Double-crested (right inset) Copyright © 1999 by Dan Lane 
male or female