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Anhinga - BirdForum Opus

(Redirected from Anhinga anhinga)
Anhinga redirects here. For the genus Anhinga, see Anhinga
Male
Photo © by stejon
Florida, USA, February 2003
Anhinga anhinga

Identification

Female
Photo © by zerb21
Wakodahatchee Wetlands, Delray Beach, Florida, USA, 5 January 2012

L. 35" (89 cm); Ws. 45" (114 cm)

  • Slender
  • Dark body
  • Long tail and neck

Male:

  • Jet black with green iridescence
  • Dramatic silver and white markings on upper back and forewings
  • Long, sharp yellow bill
  • Red eyes with blue skin

Female:

  • Dark brown overall
  • Lighter brown head, neck, and breast

Distribution

In the U.S., it is found all along the Gulf of Mexico coast, inland east Texas to Florida.

It is also found along a narrow strip on the southwest coast of Mexico, in Cuba (vagrant in the rest of the Caribbean), and in Central and South America from Guatemala, Belize and Trinidad and Tobago south to Argentina (but not Chile).

Taxonomy

Subspecies

Fledgling
Photo © by bobsofpa
Venice Rookery, Florida, USA, 2 May 2015

Two subspecies are recognized[1]:

  • A. a. leucogaster:
  • A. a. anhinga:

Habitat

Freshwater ponds, lakes, and marshes.

Behaviour

Actions

Photo © by bobsofpa
Venice Rookery, Florida, USA, 11 February 2010

Dives frequently for fish, which it spears with its long sharp bill, then tosses them in the air until it can swallow them headfirst.

The colloquial name, Snakebird, can be quite descriptive when this bird is in the water - it swims with its body mostly submerged, and just the long sinuous neck above. On quick glance, it can thus appear to be a swimming snake. The other common posture is on a tree near or over water, where it spends hours with wings extended, drying in the sun; unlike ducks, it has no oil with which to waterproof its feathers, an adaptation to improve its diving ability.

Diet

Their diet consists mostly of fish, with the addition of frogs, newts and salamanders also featuring.

Breeding

Monogamous. They often breed colonially and sometimes with Cormorants

References

  1. Clements, J. F., T. S. Schulenberg, M. J. Iliff, S. M. Billerman, T. A. Fredericks, B. L. Sullivan, and C. L. Wood. 2019. The eBird/Clements Checklist of Birds of the World: v2019. Downloaded from http://www.birds.cornell.edu/clementschecklist/download/
  2. Orta, J., Garcia, E.F.J., Kirwan, G.M. & Boesman, P. (2019). Anhinga (Anhinga anhinga). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved from https://www.hbw.com/node/52665 on 19 August 2019).
  3. Frederick, P. C. and D. Siegel-Causey (2000). Anhinga (Anhinga anhinga), version 2.0. In The Birds of North America (A. F. Poole and F. B. Gill, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bna.522

Recommended Citation

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