Sarus Crane

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iSarus Crane

Conservation status
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Gruiformes
Family: Gruidae
Genus: Grus
Species: G. antigone
Binomial name
Grus antigone
(Linnaeus, 1758)
Subspecies
  • G. a. antigone
    (Indian Sarus Crane)
  • G. a. sharpei
    (Indochina or Burmese Sarus Crane, Sharpe's Crane)
  • G. a. gillae
    (Australian Sarus Crane)
  • G. a. luzonica
    (Luzon Sarus Crane - extinct)
Synonyms

Ardea antigone Linnaeus, 1758
Grus sharpei

The Sarus Crane (Grus antigone) is a resident breeding bird in northern India (esp Etawah, Mainpuri area), Nepal, Southeast Asia and Queensland, Australia. It is a very large crane, averaging 156 cm in length, which is found in freshwater marshes and plains.

Contents

[edit] Description

Adults are grey with a bare red head and white crown and a long dark pointed bill. In flight, the long neck is kept straight, unlike herons, and the black wing tips can be seen; their long red or pink legs trail behind them. The sexes do not differ in color, but young birds are duller and browner. On average the male is larger than the female; Indian males can exceed 180 cm (6 ft) in height, with a wingspan of 250 cm (more than eight ft), making it the world's tallest flying bird alive today.

In Australia, the Sarus can easily be mistaken for the Brolga. The Brolga has a more widespread distribution across Australia, and its red colouring is confined to the head. The Brolga and Sarus are genetically quite distinct.

[edit] Distribution and habitat

The Indian population is about 10,000 birds; it used to be found on occasion in Pakistan, but not anymore since the late 1980s. While the Australian population of 5,000 birds may be increasing, the southeast Asian subspecies has been decimated by war and habitat modification and destruction (such as intensive agriculture and draining of wetlands) and by the mid-20th century had disappeared from large parts of its range which once stretched up to southern China. The little-known Philippine population is completely extinct since the late 1960s.

[edit] Subspecies

There are up to four subspecies recognized; the nominal form from the Indian subcontinent being most strongly differentiated in having a white collar below the bare head and upper neck, and white tertiary remiges. These areas are grey in the other forms, of which the Indochina subspecies sharpei is smaller than Indian birds, the Australian gilliae smaller still and the birds once found on Luzon, Philippines being smallest of all. Whether these forms are all valid is somewhat disputed; thorough mtDNA analyses, although hampered by the small number of available specimens, suggest that the continental Asian populations had ongoing gene flow until the 20th century range reductions, and that Australia was colonized by this species only in the Late Pleistocene, some 35.000 years ago.[1]

[edit] Ecology and behaviour

These birds are usually seen in small groups of 2-5 and they forage while walking in shallow water or in fields, sometimes probing with their long bills. They are omnivorous, eating insects, aquatic plants and animals, crustaceans, seeds and berries, small vertebrates, and invertebrates.

It nests on the ground, laying two to three eggs in a bulky nest. Unlike many cranes which make long migrations, the Sarus Crane does not; there is some short-distance dispersal however. Both the male and female take turns sitting on the nest, and the male is the main protector. They mate for life.

[edit] Popular culture

The species is venerated in India and legend has it that Valmiki cursed a hunter for killing a Sarus Crane and was then inspired to write the epic Ramayana[1].

[edit] See also

[edit] References

  1. ^ Wood TC & Krajewsky C. (1996): Mitochondrial DNA sequence variation among the subspecies of Sarus Crane (Grus antigone). Auk 113(3): 655–663. PDF fulltext
  • BirdLife International (2006). Grus antigone. 2006 IUCN Red List of Threatened Species. IUCN 2006. Retrieved on 09 May 2006. Database entry includes a range map and justification for why this species is vulnerable.
  • Grimmett, Richard; Inskipp, Carol, Inskipp, Tim & Byers, Clive (1999): Birds of India, Pakistan, Nepal, Bangladesh, Bhutan, Sri Lanka, and the Maldives. Princeton University Press, Princeton, N.J.. ISBN 0-691-04910-6

[edit] Media

Videos of the Sarus Crane at Disney's Animal Kingdom

[edit] External links

Retrieved from "http://en.wikipedia.org../../../s/a/r/Sarus_Crane_5139.html"