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GALLERIES > BIRDS > PELECANIFORMES > ANHINGIDAE > ANHINGA [Anhinga anhinga]


Anhinga Image @ Kiwifoto.com
 
 
Location: The Everglades, FL
GPS: 25.3N, -80.9W, elev=0' MAP
Date: April 15, 2010
ID : 6879 [3888 x 2592]

Anhinga Image @ Kiwifoto.com
 
 
Location: The Everglades, FL
GPS: 25.3N, -80.9W, elev=0' MAP
Date: April 15, 2010
ID : 6884 [3888 x 2592]

nature photography

Anhinga Image @ Kiwifoto.com
 
 
Location: The Everglades, FL
GPS: 25.3N, -80.9W, elev=0' MAP
Date: April 15, 2010
ID : 6906 [3888 x 2592]

Anhinga Photo @ Kiwifoto.com
 
 
Location: The Everglades, FL
GPS: 25.3N, -80.9W, elev=0' MAP
Date: April 15, 2010
ID : 6916 [3888 x 2592]

bird photography

Anhinga Picture @ Kiwifoto.com
 
 
Location: The Everglades, FL
GPS: 25.3N, -80.9W, elev=0' MAP
Date: April 15, 2010
ID : 6924 [3888 x 2592]

Anhinga Image @ Kiwifoto.com
 
 
Location: The Everglades, FL
GPS: 25.3N, -80.9W, elev=0' MAP
Date: April 15, 2010
ID : 6925 [3888 x 2592]

nature photography

Anhinga Image @ Kiwifoto.com
 
 
Location: The Everglades, FL
GPS: 25.3N, -80.9W, elev=0' MAP
Date: April 15, 2010
ID : 6953 [3888 x 2592]

bird photography

SPECIES INFO

For the bird genus Anhinga, see Darter

The Anhinga (Anhinga anhinga), sometimes called Snakebird, Darter, American Darter, or Water Turkey, is a water bird of the warmer parts of North America and South America. The word "anhinga" comes from the Brazilian Tupi language and means devil bird or snake bird.

It is a cormorant-like bird with an average body length of 85 cm (35 in), a wingspan of 117 cm (45 in), and a weight of 1,350 g. It is a dark-plumaged fish-eater with a very long neck, and often swims with only the neck above water. When swimming in this style the name Snakebird is apparent, since only the colored neck appears above water the bird looks like a snake ready to strike.

The Anhinga is a member of the darter family, Anhingidae, and is closely related to Indian (Anhinga melanogaster), African (Anhinga rufa), and Australian (Anhinga novaehollandiae) Darters.

The Anhinga's feathers are not waterproofed by oils like those of ducks, and can get waterlogged, causing the bird to become barely buoyant. However, this allows it to dive easily and search for fish under the water. It can stay down for significant periods.

When necessary, the Anhinga will dry out its wings and feathers. It will perch for long periods with its wings spread to allow the drying process, as do cormorants. If it attempts to fly while its wings are wet, it has great difficulty getting off the water and takes off by flapping vigorously while 'running' on the water. Anhinga will often search for food in small groups.


Distribution and migration

The anhinga genus is found all over the world in warm shallow waters. The American Anhinga has been subdivided into two subspecies - A. a. anhinga and A. a. leucogaster - based on their location. A. a. anhinga can be found mainly east of the Andes in South America and also the islands of Trinidad and Tobago. A. a. leucogaster can be found in the southern United States, Mexico, Cuba, and Grenada.

Only birds that live in the extreme north and south of their range migrate and do so based on temperature and available sunlight. Anhingas will migrate towards the equator during winter but this range is "determined by the amount of sunshine to warm the chilled birds". Although not in their usual range, anhingas have been found as far north as the states of Pennsylvania and Wisconsin in the United States.

Kettles of anhingas often migrate with other birds and have been described as resembling black paper gliders.

Physical description and taxonomy Male Anhinga drying its feathers and warming its body; St. Petersburg, Florida, USA.

The A. anhinga species is a large bird and measures approximately 35 in (88.9 cm) in length with a 45 in (1.14 m) wingspan. The A. a. anhinga is larger than A. a. leucogaster and has "broader buffy tail lips". The weight is 2.7 lb (1.22 kg). The bill is long (about twice the length of the head), sharply pointed and yellow as are the webbed feet.

Most of the male Anhinga's body is a glossy black green with the wings, base of wings, and tail being a glossy black blue. The tip of the tail has white feathers. The back of the head and the neck have elongated feathers that have been described as gray or light purple white. The upper back of the body and wings is spotted or streaked with white.

The female Anhinga is similar to the male Anhinga except that it has a pale gray-buff or light brown head, neck, and upper chest. The lower chest or breast is a chestnut color and as compared to the male, the female has a more brown back.

The hatchling starts out bald but gains tan down within a few days of hatching. Within two weeks the tan down has been replaced by white down. Three weeks after hatching, the first juvenile feathers appear. Juveniles are mostly brown until first breeding after the second or third winter.

Protected status

The Anhinga is protected in the US under the Migratory Bird Treaty Act of 1918.






                                     




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