| Titre : | Wildfowl 62 - 2012 |
| Type de document : | Bulletin |
| Paru le : | 00/00/0000 |
Dépouillements
Article
Felix Razafindrajao, Auteur ;
H. Glyn Young, Auteur ;
Abdallah Iahia Bin Aboudou, Auteur
Dans
Wildfowl (62 2012)
Madagascar Teal Anas bernieri were captured at Lake Antsamaka, central-western Madagascar, during the species' annual wing moult to test whether the sexes could be differentiated on morphometrics and report on a little-known species. A total of [...]
Article
Mark J. Petrie, Auteur ;
Ronald D. Drobney, Auteur ;
Dan T. Sears, Auteur ;
Llwellyn M. Armstrong, Auteur
Dans
Wildfowl (62 2012)
The hypothesis that Mallard Anas platyrhynchos and American Black Duck Anas rubripes compete during the breeding period has generated considerable debate. To further evaluate this hypothesis, the following predictions were tested for sympatric M[...]
Article
Abel Gyimesi, Auteur ;
Rob Lensink, Auteur
Dans
Wildfowl (62 2012)
The Egyptian Goose Alopochen aegyptiaca was introduced as an ornamental species to parks in the Netherlands during the 20th century because of its exotic plumage. Escaped birds started to breed in the wild in 1967, and the species has now coloni[...]
Article
Konrad Schwarz, Auteur ;
Friederike Woog, Auteur
Dans
Wildfowl (62 2012)
Use of grazing areas by feral Greylag Geese Anser anser was studied from May-September 2010 to compare grazing pressure at two feeding sites during and after moult. Grazing pressure was determined from weekly counts of goose droppings within ran[...]
Article
Colette Hall, Auteur ;
Jacqueline R. Glanville, Auteur ;
Helen Boland, Auteur ;
Olafur Einarsson, Auteur ;
Graham Mcelwaine, Auteur ;
Chas A. Holt, Auteur ;
Christopher J. Spray, Auteur ;
Eileen C. Rees, Auteur
Dans
Wildfowl (62 2012)
Trends in total population size and mid-winter distribution have been determined for the Icelandic Whooper Swan population through coordinated international censuses, undertaken in January across its wintering range in Britain, Ireland and Icela[...]
Article
Murray Williams, Auteur
Dans
Wildfowl (62 2012)
The last population of the merganser Mergus australis persisted at Auckland Islands in New Zealand's Subantarctic until its extermination by specimen collectors in 1902. It is now represented by four duckling specimens, 23 skins of immatures and[...]
Article
Tetsuo Shimada, Auteur
Dans
Wildfowl (62 2012)
Foraging on avian faeces by birds is uncommon apart from the consumption of nestling faeces by songbird parents. Here, observations made of five Mallard Anas platyrhynchos, three Green-winged Teal A. crecca and one Baikal Teal A. formosa seen fe[...]
Article
Noah S. Burrell, Auteur ;
Mark A. Colwell, Auteur
Dans
Wildfowl (62 2012)
The Snowy Plover Charadrius nivosus is a threatened species of shorebird that breeds along the Pacific coast of North America where predation of eggs and chicks is thought to be a principal cause of low productivity and small population size. Da[...]
Article
Ruben C. Fijn, Auteur ;
Karen L. Krijgsveld, Auteur ;
Wim Tijsen, Auteur ;
Hein A. M. Prinsen, Auteur ;
Sjoerd Dirksen, Auteur
Dans
Wildfowl (62 2012)
Each winter similar to 30% of the Northwest European Bewick's Swan Cygnus columbianus bewickii population feeds in Polder Wieringermeer, the Netherlands, on waste crops left after the harvest. The area has also become important for generating en[...]
Article
Gemma M. Bowker-Wright, Auteur ;
Ben D. Bell, Auteur ;
Peter A. Ritchie, Auteur ;
Murray Williams, Auteur
Dans
Wildfowl (62 2012)
We examined levels of mitochondria] DNA (mtDNA) and DNA microsatellite genetic variation in Brown Teal (Anas chlorotis), mainland New Zealand's rarest waterfowl. Samples were taken from the two remaining wild populations, a captive population, a[...]
Article
Murray Williams, Auteur ;
Richard N. Holdaway, Auteur ;
Karyne M. Rogers, Auteur
Dans
Wildfowl (62 2012)
The likely feeding environments of individuals from each of the three populations of New Zealand's extinct merganser Mergus australis were interpreted from stable isotope ratios of carbon (C-13/C-12) and nitrogen (N-15/N-14) in fossil bones and [...]
Article
Eileen C. Rees, Auteur
Dans
Wildfowl (62 2012)
This review considers data published on the effects of offshore and onshore windfarms on swans and geese and finds that the information available is patchy. Of 72 swans or geese reported as collision victims at 46 wind farms, most (39 birds) wer[...]
Article
Colette Hall, Auteur ;
Jacqueline R. Glanville, Auteur ;
Helen Boland, Auteur ;
Olafur Einarsson, Auteur ;
Graham Mcelwaine, Auteur ;
Chas A. Holt, Auteur ;
Christopher J. Spray, Auteur ;
Eileen C. Rees, Auteur
Dans
Wildfowl (62 2012)
Trends in total population size and mid-winter distribution have been determined for the Icelandic Whooper Swan population through coordinated international censuses, undertaken in January across its wintering range in Britain, Ireland and Icela[...]
