Stiff-tailed duck

The stiff-tailed ducks, Oxyura, are part of the Oxyurini tribe of ducks. The genus name is derived from Ancient Greek oxus, "sharp", and oura, "tail".[1]

Stiff-tailed duck
Temporal range: Early Miocene to present
Weißkopfruderente Oxyura leucocephala 050324 Ausschnitt.jpg
Male white-headed duck, Oxyura leucocephala
Scientific classification e
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Anseriformes
Family: Anatidae
Tribe: Oxyurini
Genus: Oxyura
Bonaparte, 1828
Species

Oxyura australis
Oxyura jamaicensis
Oxyura leucocephala
Oxyura maccoa
Oxyura vittata

Oxyura distribution.svg
Key:
  Oxyura vittata
  Oxyura ferruginea
  Oxyura maccoa
  Oxyura leucocephala
  Oxyura jamaicensis
  Oxyura australis

All have, as their name implies, long, stiff tail feathers, which are erected when the bird is resting. All have relatively large, swollen bills. These are freshwater diving ducks. Their legs are set far back, which makes them awkward on land, so they rarely leave the water.

Their unusual displays involve drumming noises from inflatable throat sacs, head throwing, and erecting short crests. Plumage sequences are complicated, and aging difficult. Plumage is vital for survival because of this animals tendency to spend time in the water.

The six extant members of this genus in summation are distributed widely throughout North America, South America, Australia, Asia, and much of Africa.

SpeciesEdit

Image Scientific name Common Name Distribution
  O. australis Blue-billed duck Australia
  O. jamaicensis Ruddy duck North and South America
  O. ferruginea Andean duck Andes Mountains of South America
  O. leucocephala White-headed duck Spain, North Africa, and western and central Asia
  O. maccoa Maccoa duck eastern Africa from Sudan and Ethiopia to Tanzania and west to eastern Zaire, and southern Africa from Zimbabwe to Cape Province, South Africa
  O. vittata Lake duck central Chile, Argentina and southern Uruguay

A fossil species from the Late Pliocene or Early Pleistocene of Jalisco (Mexico) was described as Oxyura zapatanima. It resembled a small ruddy duck or, even more, an Argentine blue-bill. A larger Middle Pleistocene fossil form from the southwestern United States was described as Oxyura bessomi; it was probably quite close to the ruddy duck.

"Oxyura" doksana from the Early Miocene of Dolnice (Czech Republic) cannot be assigned to any anatine subfamily with certainty.[2]

ReferencesEdit

  1. ^ Jobling, James A (2010). The Helm Dictionary of Scientific Bird Names. London: Christopher Helm. p. 287. ISBN 978-1-4081-2501-4.
  2. ^ Worthy et al. (2007)

Further readingEdit