Blue Duck

Blue Duck

Taxobox
name = Blue Duck
status = EN | status_system = IUCN3.1
trend = down


image_caption = Blue Duck at Staglands, Akatarawa
regnum = Animalia
phylum = Chordata
classis = Aves
ordo = Anseriformes
familia = Anatidae
genus = "Hymenolaimus"
genus_authority = Gray, 1843
species = "H. malacorhynchos"
binomial = "Hymenolaimus malacorhynchos"
binomial_authority = (Gmelin, 1789)
subdivision_ranks = Subspecies
subdivision =
* "H. m. malacorhynchos" South Island Blue Duck
* "H. m. hymenolaimus" North Island Blue Duck

rendition of the males' call.

This 54 cm long species is an endemic resident breeder in New Zealand, nesting in hollow logs, small caves and other sheltered spots. It is a rare duck, holding territories on fast flowing mountain rivers.

It is a powerful swimmer even in white water, but is reluctant to fly. It is difficult to find, but not particularly wary when located.

The blue duck is a dark slate-grey with a chestnut-flecked breast and a paler bill and eye. The pinkish-white bill has fleshy flaps of skin hanging from the sides of its tip. The male's call is an aspirated whistle, and the female's is a rattling growl.

This is a very localised species now threatened by predation from introduced mammals, competition for its invertebrate food with introduced trout, and damming of mountain rivers for hydroelectric schemes. The New Zealand Department of Conservation is presently working on recovery programmes in habitats such as the Oparara River area of the West Coast [Department of Conservation Te Papa Atawhai: [http://www.doc.govt.nz/templates/page.aspx?id=33061 Saving whio on the Oparara] ] .

Footnotes

References

* Database entry includes a range map, a brief justification of why this species is endangered, and the criteria used

* Madge, Steve & Burn, Hilary (1987): "Wildfowl : an identification guide to the ducks, geese and swans of the world". Christopher Helm, London. ISBN 0-7470-2201-1

External links

*cite web | url = http://www.doc.govt.nz/upload/documents/science-and-technical/tsrp22.pdf| title = Blue duck (Whio) Hymenolaimus malacorhynchos recovery plan 1997 – 2007| author = J. Adams; D. Cunningham; J. Molloy; S. Phillipson| year = 1997| publisher = Department of Conservation, Wellington, New Zealand | format = PDF | accessdate = 2007-11-07
*ARKive: [http://www.arkive.org/species/GES/birds/Hymenolaimus_malacorhynchos/ Images and movies of the Blue Duck ("Hymenolaimus malacorhynchos")]
* [http://www.birdlife.org/datazone/search/species_search.html?action=SpcHTMDetails.asp&sid=422&m=0 BirdLife Species Factsheet.]
* [http://www.doc.govt.nz/templates/podcover.aspx?id=33059 Department of Conservation Blue duck/Whio]


Wikimedia Foundation. 2010.

Игры ⚽ Поможем написать реферат

Look at other dictionaries:

  • blue duck — noun : a New Zealand duck (Hymenolaimus malacorhynchos) with mostly lead blue plumage * * * blue duck noun A species of duck (Hymenolaimus malacorhynchus) found in the mountains of New Zealand • • • Main Entry: ↑blue …   Useful english dictionary

  • blue duck — melsvosios antys statusas T sritis zoologija | vardynas atitikmenys: lot. Hymenolaimus angl. blue duck vok. Saumschnabelente, f rus. синяя утка, f pranc. canard bleu, m ryšiai: platesnis terminas – plaukiojančiosios antys siauresnis terminas –… …   Paukščių pavadinimų žodynas

  • blue duck — melsvoji antis statusas T sritis zoologija | vardynas atitikmenys: lot. Hymenolaimus malacorhynchos angl. blue duck vok. Saumschnabelente, f rus. синяя утка, f pranc. canard bleu, m ryšiai: platesnis terminas – melsvosios antys …   Paukščių pavadinimų žodynas

  • Blue Duck (Lonesome Dove series) — Blue Duck is a fictional character, a biracial Indian appearing in two books in the Lonesome Dove series. He is the son of Buffalo Hump and a kidnapped Mexican woman. There is some evidence that there was a real Blue Duck, but his character was… …   Wikipedia

  • Blue Duck Villa — (Кангу,Индонезия) Категория отеля: 4 звездочный отель Адрес: Jl. Subaksari, Gang Suk …   Каталог отелей

  • blue duck — /blu ˈdʌk/ (say blooh duk) noun 1. a New Zealand native mountain duck, Hymenolaimus malacorhynchus; whio. 2. Chiefly NZ Military a. a baseless rumour. b. a failure …  

  • Duck, duck, goose — A group of children playing the game Players 4 or more Age range 2 and up Setup time None Playing time …   Wikipedia

  • Blue-billed Duck — Conservation status Near Threatened (I …   Wikipedia

  • Duck Down Music Inc. — Duck Down Music Inc. Founded 1995 Headquarters New York, NY Key people Drew Dru Ha Friedman (co CEO) Kenyatta Buckshot Blake (co C …   Wikipedia

  • Duck River (Tennessee) — Duck River Einzugsgebiet des Duck River und des Buffalo River Daten …   Deutsch Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”