| Titre : | Wildfowl 54 - 2003 |
| Type de document : | Bulletin |
| Paru le : | 00/00/0000 |
Dépouillements
Article
K. G. McCracken, Auteur ;
J. Hemmings, Auteur ;
D. C. Paton, Auteur ;
A. D. Afton, Auteur
Dans
Wildfowl (54 2003)
Musk Ducks Biziura lobata are endemic to wetlands, river systems and coastal oceanic waters of temperate Australia. Individuals of this species are difficult to capture because of their excellent swimming and diving abilities and frequent use of[...]
Article
T. Shimada, Auteur ;
K. Shimada, Auteur
Dans
Wildfowl (54 2003)
To maximise nutrient intake, an individual may have to trade time spent feeding against time spent being vigilant for predators. Flock formation is one strategy in which individuals can benefit from the vigilance of other flock members to reduce[...]
Article
J. E. Hines, Auteur ;
M. F. Kay, Auteur ;
M. O. Wiebe, Auteur
Dans
Wildfowl (54 2003)
Helicopter surveys were carried out in June 1994-95 to determine the numbers and distribution of Greater White-fronted Geese Anser albifrons frontalis and other waterfowl in the Rasmussen Lowlands of the Central Canadian Arctic. The results prov[...]
Article
H. Boyd, Auteur ;
A. D. Fox, Auteur
Dans
Wildfowl (54 2003)
Three-bird flights (3BF) have been reported amongst seven species of geese: 12 populations of Branta and seven of Anser. The phenomenon has been recorded from mid-winter to the start of incubation, being most frequent and intense during the peri[...]
Article
A. D. Fox, Auteur
Dans
Wildfowl (54 2003)
If patterns of scoter distribution and abundance are to be understood, there is a need to know upon which prey items these birds feed, how they obtain these prey items and the habitats from which these food items are most easily harvested. Dieta[...]
Article
H. Schielzeth, Auteur ;
L. Lachmann, Auteur ;
G. Eichhorn, Auteur ;
T. Heinicke, Auteur
Dans
Wildfowl (54 2003)
This paper presents recent data for the White-headed Duck Oxyura leucocephala in the Tengiz-Korgalzhyn Region, Central Kazakhstan. Most data were collected during surveys in the summer and autumn (July-October) 1999-2002. The region proved to ho[...]
Article
N. Jarrett, Auteur ;
V. Mason, Auteur ;
L. Wright, Auteur ;
V. Levassor, Auteur
Dans
Wildfowl (54 2003)
Egg density and the egg mass techniques for incubation stage assessment were developed to predict the hatch dates of Greater Flamingo Phoenicopterus ruber roseus eggs laid in captivity at WWT, Slimbridge, UK. The accuracy of each technique was t[...]
Article
M. L. Mallory, Auteur ;
A. J. Fontaine, Auteur ;
J. Akearok, Auteur
Dans
Wildfowl (54 2003)
The eastern North American Harlequin Duck Histrionicus histrionicus is a small, uncommon seaduck that was last recorded on Baffin Island, Nunavut, Canada, in 1931. Between 1999 and 2001, Inuit hunters and elders were interviewed and river and co[...]
Article
M. L. Mallory, Auteur
Dans
Wildfowl (54 2003)
Partial clutch loss during egg-laying and incubation was examined in Wood Ducks Aix sponsa nesting near Ottawa, Ontario. Over four years, partial clutch loss occurred in 20% of nests, accounting for 2% of all eggs laid. Missing eggs did not appe[...]
Article
L. D. Igl, Auteur
Dans
Wildfowl (54 2003)
The Bufflehead Bucephala albeola breeds predominantly in Canada and Alaska (USA). Evidence suggests that the species may have recently expanded its breeding range southward into central and south central North Dakota. This paper presents data on[...]
Article
L. Nilsson, Auteur ;
H. Kampe-Persson, Auteur
Dans
Wildfowl (54 2003)
The benefits and costs of rearing large broods were studied in a population of neck collared Greylag Geese in Scania, southernmost Sweden. Families were divided into four groups according to brood size: 1-4, 5-8, 9-12 and >12 young. Gosling surv[...]
Article
P. L. Flint, Auteur
Dans
Wildfowl (54 2003)
This study examined the incubation behaviour of Greater Scaup Aythya marila on the Yukon-Kuskokwim Delta, Alaska. The goals of the study were to describe the incubation behaviour of Greater Scaup in terms of incubation constancy, recess frequenc[...]
Article
D. Durant, Auteur
Dans
Wildfowl (54 2003)
Numerous studies on the ability of herbivorous Anatidae to digest fibre from a variety of food types (foliage, seeds, tubers) have yielded variable results. Herbivorous ducks and geese have the capacity to digest some components of fibre (betwee[...]
Article
M. Houhamdi, Auteur ;
B. Samraoui, Auteur
Dans
Wildfowl (54 2003)
Over a period of four years, the diurnal behaviour of Wigeon Anas penelope was monitored at Lac des Oiseaux, a shallow freshwater lake, part of the Numidian wetland complex located in northeast Algeria. Wigeon arrive around late October and over[...]
Article
M. R. Petersen, Auteur ;
B. J. McCaffery, Auteur ;
P. L. Flint, Auteur
Dans
Wildfowl (54 2003)
Article
L. Desnouhes, Auteur ;
M. Pichaud, Auteur ;
N. Le Clainche, Auteur ;
François Mesléard, Auteur ;
J.-F. Giroux, Auteur
Dans
Wildfowl (54 2003)
The wintering of Greylag Geese Anser anser in the Camargue, southern France, is a relatively recent phenomenon. Weekly counts carried out since 1980 on the St Seren Marsh, one of the most important sites in the Rhone delta for Anatidae, showed a[...]
