| Titre : | Wildfowl 52 - 2001 |
| Type de document : | Bulletin |
| Paru le : | 00/00/0000 |
Dépouillements
Article
M. Houhamdi, Auteur ;
B. Samraoui, Auteur
Dans
Wildfowl (52 2001)
This paper investigates the spatial distribution and the diurnal time budget of wintering Teal Anas crecca over a period of four years at a shallow lake, Lac des Oiseaux, northeast Algeria. The lake is exploited by Teal as a diurnal roost for bo[...]
Article
S. Blais, Auteur ;
Matthieu Guillemain, Auteur ;
D. Durant, Auteur ;
H. Fritz, Auteur ;
N. Guillon, Auteur
Dans
Wildfowl (52 2001)
The growth of Pintail ducklings raised in semi-captivity was measured, and their growth curves presented so as to provide a tool for determination of the age of Pintail ducklings. Significant differences exist between the measurements of male an[...]
Article
T. Nyegaard, Auteur ;
J. N. Kristiansen, Auteur ;
A. D. Fox, Auteur
Dans
Wildfowl (52 2001)
The activity budgets of Greenland White-fronted Geese Anser albifrons flavirostris during spring staging were studied in different Icelandic hayfields dominated by three grass species: Poa pratensis, Deschampsia caespitosa and Phleum pratense. G[...]
Article
G. L. Brewer, Auteur
Dans
Wildfowl (52 2001)
Observations of captive Ringed Teal allowed several previously undescribed displays to be noted, including specialised displays for maintaining contact, reinforcing the pairbond and biparental care. Males and females gave loud calls during femal[...]
Article
D. Rodrigues, Auteur ;
M. Figueiredo, Auteur ;
A. Fabiao, Auteur
Dans
Wildfowl (52 2001)
Lead pellet ingestion by Mallards of Central Portugal ranged from zero to 100%, 99 being the highest number of lead pellets detected in a single gizzard. On rice fields, lead poisoning risk increased during the shooting season through the accumu[...]
Article
J. E. Jonsson, Auteur ;
A. Gardarsson, Auteur
Dans
Wildfowl (52 2001)
The pairing chronologies of Mallard Anas platyrhynchos, Eurasian Wigeon A. penelope and Eurasian Teal A. crecca wintering in Southwest Iceland were studied over the winters of 1997-98 and 1998-99. Mallard paired first of the three species, with [...]
Article
R. Wlodarczyk, Auteur ;
Z. Wojciechowski, Auteur
Dans
Wildfowl (52 2001)
This paper describes the breeding performance of the Mute Swan in central Poland. Population size, productivity and possible factors affecting hatching success are discussed. During a four-year study (1997-2000), between 75-101 breeding pairs we[...]
Article
Change of mate in a Greylag Goose Anser anser population: Effects of timing on reproductive success.
L. Nilsson, Auteur ;
H. Persson, Auteur
Dans
Wildfowl (52 2001)
The population of the West Baltic Greylag Goose Anser anser is migratory, breeding in southwest Scania, southernmost Sweden and wintering in the Guadalquivir Marismas, southwest Spain, or in the Dutch Delta. This population has been the subject [...]
Article
G. L. Krapu, Auteur ;
D. A. Brandt, Auteur ;
J. A. Beiser, Auteur
Dans
Wildfowl (52 2001)
Dabbling ducks Genus Anas occasionally nest during mid- and late summer in the Prairie Pothole Region (PPR) of midcontinent North America but little information is available on their Autumn-reared broods or those of other duck genera. Densities,[...]
Article
L. Nilsson, Auteur ;
H. Persson, Auteur
Dans
Wildfowl (52 2001)
Dispersal from the centre of the breeding range of the Baltic Greylag Goose Anser anser was studied using observations of individuals with neck collars. The median natal dispersal distance was 0 km in females and 25 km in males, respectively. Al[...]
Article
J. I. Hodges, Auteur ;
W. D. Eldridge, Auteur
Dans
Wildfowl (52 2001)
Eiders and other waterbirds were surveyed between 1993-1995 along the eastern Arctic coast of Russia by fixed-wing aircraft to obtain baseline information on size and distribution of breeding populations. Population estimates were obtained for s[...]
Article
A. Lang, Auteur ;
J. M. Black, Auteur
Dans
Wildfowl (52 2001)
The functional response and variation in foraging efficiency of captive Barnacle Geese was measured on pasture sward. Intake rates were calculated for a range of grass sward heights using direct measurements of peck rate, bite height and number [...]
