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Dendrocygna javanica

Dendrocygna javanica (*)

Cladus: Eukaryota
Supergroup: Opisthokonta
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Cladus: Deuterostomia
Phylum: Chordata
Subphylum: Vertebrata
Infraphylum: Gnathostomata
Superclassis: Tetrapoda
Classis: Aves
Subclassis: Carinatae
Infraclassis: Neornithes
Parvclassis: Neognathae
Ordo: Anseriformes
Familia: Anatidae
Subfamilia: Dendrocygninae
Genus: Dendrocygna

Species: Dendrocygna javanica

Name

Dendrocygna javanica (Horsfield, 1821)

Vernacular name
Internationalization
Česky: Husička malá
English: Lesser Whistling Duck
Français: Dendrocygne siffleur, Dendrocygne de Java

The Lesser Whistling Duck Dendrocygna javanica, also known as Indian Whistling Duck, is a small whistling duck which breeds in South Asia and southeast Asia. It may also be called the Lesser Whistling Teal (based on an older classification), or the Tree Duck[2].

Distribution

This is a largely resident species distributed unevenly from the Pakistan lower river valleys eastwards across most of peninsular India, Nepal terai, Sri Lanka, Bangladesh, Burma, Thailand, Malaysia, Singapore, Indonesia, south China, to Vietnam. It is largely resident, apart from local movements (often induced by drought or floods), but Chinese birds winter further south.

Covering between 1 to 10 million km², it is estimated to have a global population of between two and twenty million individuals[1].

Habitat: still freshwater lakes, with plentiful vegetation, where this duck feeds on seeds and other vegetation. Occasionally seeks refuge in the ocean just outside the surf area[3].

May be seen often perching on trees near water bodies, giving rise to the alternate name Tree Duck.

Description

This species has a long grey bill, long head and longish legs. It has a buff head, neck and underparts, and a darker crown. The back and wings are darkish grey, and there are chestnut patches on the wings and tail. All plumages are similar.

This species is gregarious, and at favoured sites, such as Carambolin Lake in India, the flocks of a thousand or more birds arriving at dawn are an impressive sight.

The call is a wheezy, whistling "seasick, seasick", call, uttered in flight[3]. Roosts can be quite noisy.

Nesting

It nests in tree holes, old nests of other birds, or on a stick platform near the ground, and lays 6-12 eggs.

References

1. ^ a b BirdLife International (2004). Dendrocygna javanica. 2006. IUCN Red List of Threatened Species. IUCN 2006. www.iucnredlist.org. Retrieved on 11 May 2006. justification for least concern: global population of between two and twenty million individuals (Wetlands International 2002).
2. ^ Grewal, Bikram; Bill Harvey and Otto Pfister (2002). Photographic guide to birds of India. Periplus editions / Princeton University Press. p. 58
3. ^ a b Ali, Salim; Sidney Dillon Ripley (1986/2001). Handbook of the Birds of India and Pakistan, 2nd ed.,10 vols (2nd ed.). Oxford University Press. Bird Number 138, vol. 1, p. 138-140.

Other References

* Wildfowl by Madge and Burn, ISBN 0-7470-2201-1
* Birds of Goa (video)

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Source: Wikipedia, Wikispecies: All text is available under the terms of the GNU Free Documentation License