Anhingidae

This family comprises just the New World Anhinga (Anhinga anhinga) and the Old World Anhinga (A. melanogaster); the latter is sometimes split into two or three species. Both are diving birds that resemble cormorants (family Phalacrocoracidae), to which they are closely related. They are also known as 'water-turkeys' or 'snakebirds'.

Additional information 

The bird are generally solitary, but may form small, loose groups. They hunt underwater, propelling themselves with their feet, and impaling their prey with their sharp bill. At the surface, they often swim semi-submerged. Otherwise, they spend a great deal of time roosting on tree branches overhanging water, often with their wings spread to dry themselves. The birds can take off from land or water, and use thermals to travel farther.

The birds usually nest singly or in small colonies, and build stick nests in trees, often over water.

Taxonomy

There are two species, both of genus Anhinga.

• A. anhinga (New World Anhinga)
• A. melanogaster (Old World Anhinga)

The latter is sometimes split into two or three species.