Habitat selection of marbled teal and whiteheaded duck during. Pdf hope for the whiteheaded duck, oxyura leucocephala aves. A model of ruddy duck oxyura jamaicensis eradication for the. Wetlands international global series 15, kuala lumpur, malaysia. The north american ruddy duck oxyura jamaicensis established a feral population in the uk more than 40 years ago, and it is now threatening the endangered white. Oxyura leucocephala, an arctic sea bird in the family anatidae. Download fulltext pdf the status of the whiteheaded duck oxyura leucocephala article pdf available in bird conservation international 203. The whiteheaded duck oxyura leucocephala is a small stifftailed duck some 45 cm 18 in long. Hybridization between whiteheaded ducks and introduced. Pdf on the behaviour of the whiteheaded duck with especial. Whiteheaded duck oxyura leucocephala check out the full taxonomy and distribution of whiteheaded duck on hbw alive.
Species or subspecies currently listed as such in one or both appendices. Male in full plumage has white head and a bright blue, almost grotesquely swollen bill, which is smaller and greyer in summer. A model of ruddy duck oxyura jamaicensis eradication for the uk. Head white, with black centre of crown, neck blackish lower neck, breast, body reddish brown, shading to greybuff on central abdomen and undertail coverts, and greyish on scapulars and uppertail coverts tail black wing greybrown variations if present female. Status of the whiteheaded duck oxyura leucocephala in northeast algeria. The whiteheaded duck breeds principally in small, shallow. Oxyura jamaicensis ruddy duck threatens the globally endangered whiteheaded. Leucaena leucocephala is more palatable than arachis pintoi nieves et al.
It is known that ruddy duck x whiteheaded duck hybrids are fertile to the second generation in captivity, which poses an. A fossil species from the late pliocene or early pleistocene of jalisco mexico was described as oxyura zapatanima. The status of the whiteheaded duck oxyura leucocephala. The status of the whiteheaded duck oxyura leucocephala volume 2 issue 3 andy j. In spain, ruddy ducks hybridize with the globally endangered whiteheaded duck, oxyura leucocephala. Understanding habitat requirements is vital for developing successful management strategies for threatened species. The male has a white head with black crown, a blue bill, and reddishgrey plumage. With the help of over 7,000 of the worlds best wildlife filmmakers and photographers, conservationists and scientists, featured multimedia factfiles for more than 16,000 endangered species. Ruddy duck oxyura jamaicensis timing scope severity impact ongoing minority oxyura leucocephala.
Pdf the status of the whiteheaded duck oxyura leucocephala. The whiteheaded duck, oxyura leucocephala, a native of spain is a closely related species to the ruddy duck. Oxyura leucocephala scopoli, 1769 animalia chordata aves anseriformes anatidae common names. Oxyura leucocephala scopoli, 1769 oxyura leucocephala.
By 2000, the uk population peaked at nearly 6,000 individuals. Status overview and recommendations for conservation of the. During an organisms evolution, functional adaptations help species to become better suited to their ecological niches. Conservation of the whiteheaded duck oxyura leucocephala. Conservation of oxyura leucocephala in barabinskay lowland. Status overview and recommendations for conservation of.
A larger middle pleistocene fossil form from the southwestern usa was described as oxyura bessomi. Oxyura species oxyura leucocephala name synonyms anas leucocephala scopoli, 1769 homonyms oxyura leucocephala scopoli, 1769 common names ahate buruzuria in basque gobbo rugginoso in italian gobbo rugginoso in italian hvidhovedet skarveand in danish. The ruddy duck, oxyura jamaicensis, was introduced to great britain in the mid20th century and has recently spread to other western european countries. The global population, which was probably over 100 000 in the early twentieth century, has decreased to 8 000 000 individuals in 2002. Browse and buy exceptional, royalty free stock clips, handpicked by the best. Leucaena leucocephala can replace alfalfa scapinello et al. It resembled a small ruddy duck or, even more, argentine bluebill.
May 11, 2020 whiteheaded duck oxyura leucocephala check out the full taxonomy and distribution of whiteheaded duck on hbw alive. The whiteheaded duck oxyura leucocephala has undergone a considerable decline in range and population size this century, with the destruction and degradation of. Diurnal activity and breeding ecology of the whiteheaded. This autumn, between and 16 september 2016, more than 20,000 birds in three huge flocks were. The whiteheaded duck oxyura leucocephala is a small stifftailed duck some 45 cm 18 in. Wildscreens arkive project was launched in 2003 and grew to become the worlds biggest encyclopaedia of life on earth. Whiteheaded ducks oxyura leucocephala are the only stifftail oxyurinii native to. Whiteheaded duck oxyura leucocephala birdlife species.
Nov 12, 2011 a fossil species from the late pliocene or early pleistocene of jalisco mexico was described as oxyura zapatanima. Currently considered globally endangered, with a population estimated at no more than c. Whiteheaded duck oxyura leucocephala the greatest longterm threat to the species survival is thought to be competition and introgressive hybridisation i. The female has a dark bill and rather duller colouring. The project will be implemented in barabinskaya lowland, the southeast part of western siberia. The largest populations of whiteheaded ducks are found in russia, kazakhstan, turkey, iran, afghanistan, tajikistan, turkmenistan, uzbekistan, armenia, and mongolia. Morphological reflections of evolutionary adaptations in. I took these footages with hasselblad superachromat 250mm lens that is attached to sony ax100 camcorder via showtime adapter. The globally threatened whiteheaded duck is one the most rare duck species in the western. Duck, oxyura leucocephala, in turkey was analysed based on all. Species considered covered under a family or genus enlisted in appendix ii, because. The ruddy duck oxyura jamaicensis, a stifftail native to the americas, was introduced to the uk in the 1950s and has since been recorded in 22 western palearctic countries. Whiteheaded duck oxyura leucocephala videos, photos and. Pdf the development of the breeding and nonbreeding.
In fact, some taxonomists, including the american ornithological society, still consider it conspecific. Oxyura leucocephala scopoli, 1769 birdlife international. Status overview and recommendations for conservation of the whiteheaded duck oxyura leucocephala in central asia. The stifftailed ducks, oxyura, are part of the oxyurini tribe of ducks. The genus name is derived from ancient greek oxus, sharp, and oura, tail all have, as their name implies, long, stiff tail feathers, which are erected when the bird is resting. Most of this decline is due to habitat loss and hunting, but interbreeding of the spanish population with the introduced ruddy duck oxyura jamaicensis is a more recent threat. The current world wintering population is estimated at 19,000 birds, with the likelihood that additional birds occur in unsurveyed wetlands in asia. It is also unusual that the motive is to protect international biodiversity and, in particular, the status of the whiteheaded duck oxyura leucocephala in spain. Affordable and search from millions of royalty free images, photos and vectors.
The ruddy duck oxyura jamaicensis is a duck from north america and one of the stifftailed ducks. Mar 27, 2018 during an organisms evolution, functional adaptations help species to become better suited to their ecological niches. The first breeding in captivity of the whiteheaded duck oxyura leucocephala at slimbridge enabled studies to be made of courtship, nesting, incubation and. We utilized a simple generic model, which includes uncertainty in parameter estimates and can be used for any invasive species. This file is licensed under the creative commons attributionshare alike 2. Malvasia european red list assessment european red list status en endangered, iucn version 3. This autumn, between and 16 september 2016, more than 20,000 birds in three huge flocks were estimated to be present at. The original flock settled quickly in their new habitat and started breeding. Abstract the ruddy duck oxyura jamaicensis, a stifftail native to the.
The aim of the project is to contribute to the development of the local work in studying and conservation of oxyura leucocephala in barabinskaya lowland. Whiteheaded ducks oxyura leucocephala are the only stifftail oxyurinii native to the palearctic. Oxyura leucocephala wikipedia an piemonteis, lenciclopedia. The spanish population has recently recovered rapidly after being near to extinction in the 1970s. Its breeding habitat is lakes with open water and dense vegetation at the margin. The greatest threat, however, now comes from hybridization and competetion with the ruddy duck oxyura jamaicensis. The status of the whiteheaded duck oxyura leucocephala bird. Description mediumsized duck l 45 cm, unmistikable because of it shape and colour. They are extremely aquatic and do best on large ponds of variable depth, with clean, deep water and plenty of natural food available in the form of marginal aquatic plants, while a muddy pond bottom will provide food items such as tubifex worms. Status overview and recommendations for conservation of the whiteheaded duck in central asia 35 the species breeds in small numbers in wetlands of the great lakes basin.
Hbw alive contains information on descriptive notes, voice, habitat, food and feeding, breeding, movements, status and conservation plus a list of bibliographical references for this species account. The whiteheaded duck oxyura leucocephala is the only stifftail oxyurini indigenous to the palearctic. Jan 20, 2015 most of this decline is due to habitat loss and hunting, but interbreeding of the spanish population with the introduced ruddy duck oxyura jamaicensis is a more recent threat. Oxyura jamaicensis ruddy duck threatens the globally endangered whiteheaded duck see oxyura leucocephala in iucn red list of threatened species with extinction through introgressive hybridisation and competition. Action plan for the whiteheaded duck oxyura leucocephala. The main causes of the decline in range have been wetland drainage, hunting, disturbances, pesticides and egg and juveniles predation from rats and dogs. We assessed the effects of hybridization on the spanish whiteheaded ducks, which. Morphological reflections of evolutionary adaptations in the. Specializations of the lingual organ is a critical adaptation of birds, such as the whiteheaded duck oxyura leucocephala, that. Lead isotopes and lead shot ingestion in the globally threatened marbled teal marmaronetta angustirostris and whiteheaded duck oxyura leucocephala fredrik svanberg a. Among them two the little known woolly flying squirrel, eupetaurus cinereus, found in the northern mountains of gilgit and chitral, and the indus. Post jobs, find pros, and collaborate commission free in our professional marketplace.
In 1991, hybridisation with the native and globally threatened iucn endangered whiteheaded duck oxyura leucocephala, a. Malvasia cabeciblanca anec capblanc whiteheaded duck oxyura leucocephala, male, clotdegalvany, alicante, espana date. Recommended english names, princeton university press, isbn. Genetic studies facilitated management decisions on the. Files are available under licenses specified on their description page. Conservation of oxyura leucocephala in barabinskay lowland russia evgeniy murzakhanov. A flock of 20 birds was introduced into britain from america before 1950. This is an unusual programme given that the target is a bird and effort is spread throughout the uk. By 1991 hybrids resulting from crosses between ruddy ducks and the indigenous white. Leucaena leaf meal may be included at 25% when supplementing a diet based on cassava peels and gliricidia sepium and at 3040% when rabbits are fed with arachis pintoi. Lead isotopes and lead shot ingestion in the globally. Habitat selection of marbled teal and whiteheaded duck. Oxyura leucocephala wikispecies, free species directory.
The whiteheaded duck oxyura leucocephala has undergone a considerable decline in range and population size this century, with the destruction and degradation of habitat and hunting being the causes. The diets of the whiteheaded duck oxyura leucocephala, ruddy duck o. Specializations of the lingual organ is a critical adaptation of birds, such as the whiteheaded duck oxyura leucocephala, that enables their nutritional. A model of ruddy duck oxyura jamaicensis eradication for. Whiteheaded ducks can also be found in parts of the oriental region and the ethiopian region. The genus name is derived from ancient greek oxus, sharp, and oura, tail, and jamaicensis is from jamaica. Leucaena is a longlived perennial legume around 23 year halflife in difficult conditions in australia. All structured data from the file and property namespaces is available under the creative commons cc0 license. Diurnal activity budget and breeding ecology of the whiteheaded duck oxyura leucocephala at lake tonga northeast algeria. From the morphological aspect, these adaptations are reflected in the anatomical specializations of different organs.
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