| Titre : | Ardea 89(1) - 2001 |
| Type de document : | Bulletin |
| Paru le : | 00/00/0000 |
Dépouillements
Article
C. M. Perrins, Auteur ;
R. H. Mccleery, Auteur
Dans
Ardea (89(1) 2001)
Studies of ringed Great Tits Parus major have shown that the mass of fledglings has a major impact on their futures. Heavier chicks an more likely to survive to breed and birds which are larger at fledging remain larger birds for the whole of th[...]
Article
S. E. Piper, Auteur
Dans
Ardea (89(1) 2001)
The Long-tailed Wagtail Motacilla clara is the African analogue of the Palearctic Grey Wagtail Motacilla cinerea. It may be expected that their demographies and life-history strategies should be similar, but this is not so. The African species h[...]
Article
L. Jenni, Auteur
Dans
Ardea (89(1) 2001)
Article
P. H. Becker, Auteur ;
H. Wendeln, Auteur ;
J. Gonzalez-Solis, Auteur
Dans
Ardea (89(1) 2001)
From 1992 to 1999, we used subcutaneously injected transponders, enabling remote and automatic annual identification with the aim of performing an integrated population study of a Common Tern sterna hirundo colony. Within a few years, population[...]
Article
P. Clausen, Auteur ;
M. Frederiksen, Auteur ;
S. M. Percival, Auteur ;
G. Q. A. Anderson, Auteur ;
M. J. H. Denny, Auteur
Dans
Ardea (89(1) 2001)
The East Atlantic flyway population of pale-bellied Brent Geese Branta hrota is, with its current population estimate of 6000 birds, one of the smallest goose populations of the World. During 1991-99 a total of 361 individually marked Brent Gees[...]
Article
M. Kershaw, Auteur ;
R. D. Hearn, Auteur ;
P. A. Cranswick, Auteur
Dans
Ardea (89(1) 2001)
An Integrated Population Monitoring (IPM) programme is being developed for wildfowl (Anatidae) in the United Kingdom. This aims to monitor the demographic processes that regulate population size and distribution, to identify requirements for the[...]
Article
J. Madsen, Auteur
Dans
Ardea (89(1) 2001)
Individual variation in spring migration strategies was analysed for neck-banded Pink-footed Geese Anser brachyrhynchus migrating from Denmark (D) via stopover sites in the Trondheimsfjord area (T) in mid-Norway and Vesteralen (V) in northern No[...]
Article
T. Fransson, Auteur
Dans
Ardea (89(1) 2001)
Preparations to produce recovery atlases showing results from extensive bird ringing activities are firmly under way in many ringing schemes. In Sweden such a project was initiated long ago and the first volume out of three will now soon be publ[...]
Article
F. Bairlein, Auteur
Dans
Ardea (89(1) 2001)
Initiated by Hans Christian Cornelius Mortensen in 1899, the ringing of birds unveiled some of the mysteries of avian migrations, notably routes and destinations in migratory species. Using a few case studies, the paper presents an overview abou[...]
Article
N. O. Preuss, Auteur
Dans
Ardea (89(1) 2001)
A brief description of Hans Christian Cornelius Mortensen, the first to use individual numbered rings in the study of bird migration, with information of some aspects of the history of bird ringing. This paper is a slightly modified version of t[...]
Article
R. P. Wilson, Auteur
Dans
Ardea (89(1) 2001)
Two methods for determining the movement of birds are discussed; Global Location Sensing (determination of position by consideration of day length and local timing of mid-day) and dead reckoning (calculation of routes by vectors). These art, exa[...]
Article
Michel Gauthier-Clerc, Auteur ;
Y. Le Maho, Auteur
Dans
Ardea (89(1) 2001)
Ringing allows obtaining a considerable amount of data on behavioural and ecological parameters of birds. However, this method has certain drawbacks such as stress due to handling and an impact on bird survival, and data collection of sufficient[...]
Article
A. A. Dhondt, Auteur
Dans
Ardea (89(1) 2001)
The existence of trade-offs between reproduction and survival in birds has been documented by comparing variation in these traits across species and by using brood-size manipulation experiments to show experimentally the existence of a cost of r[...]
Article
Inconsistent pattern of extra-pair paternity in first and second broods of the Great Tit Parus major
T. Lubjuhn, Auteur ;
J. Brun, Auteur ;
T. Gerken, Auteur ;
J. T. Epplen, Auteur
Dans
Ardea (89(1) 2001)
In this study we compare extra-pair paternity rates in first and second broods of 25 individual breeding pairs of the Great Tit Parus major. 24% of the first broods contained at least one nestling due to copulations outside the pair bond in cont[...]
Article
A. E. Coleman, Auteur ;
J. T. Coleman, Auteur ;
P. A. Coleman, Auteur ;
C. D. T. Minton, Auteur
Dans
Ardea (89(1) 2001)
The results of a long-term study of the Mute Swan Cygnus color in a 1440 km(2) area of the English Midlands are presented. During the period 1961 to 1999 the population varied between 213 and 551 birds with the numbers of pairs each spring rangi[...]
Article
M. Widmer, Auteur ;
H. Biebach, Auteur
Dans
Ardea (89(1) 2001)
Long-distance migrants often arrive on their breeding grounds with large fat stores. Two explanations for this phenomenon are (1) that large fat stores at arrival are needed to speed up the breeding schedule and to counteract possible time const[...]
Article
Jean-Dominique Lebreton, Auteur
Dans
Ardea (89(1) 2001)
Bird ringing was mainly used originally to study bird migration. However, it was realised as early as 1928 that encounters (recoveries) of dead ringed birds contain information on survival-mortality processes. Lack was the first to investigate s[...]
Article
H. Mouritsen, Auteur
Dans
Ardea (89(1) 2001)
Ringing recoveries are normally used to elucidate where and when specific populations of birds migrate. So far, however, ringing data have rarely been used to answer questions about how the birds' orientation mechanisms function to produce the p[...]
Article
A. G. Gosler, Auteur
Dans
Ardea (89(1) 2001)
Great Tits Parus major and other small birds at temperate latitudes insure against overnight starvation in winter by building up a fat reserve each day, which is then depleted over night. Because this may increase their risk of predation, the le[...]
Article
D. F. DeSante, Auteur ;
M. P. Nott, Auteur ;
D. R. O'Grady, Auteur
Dans
Ardea (89(1) 2001)
A technique for identifying the proximate demographic cause(s) of population decline at two spatial scales is proposed and evaluated. The approach involves modelling spatial variation in vital rates (productivity and survivorship) as a function [...]
Article
S. R. Baillie, Auteur
Dans
Ardea (89(1) 2001)
Wildlife conservationists and managers must address a wide range of issues relating to bird populations including sustainable management of the wider countryside, the protection of individual sites and site networks and proper ly planned species[...]
Article
I. Newton, Auteur
Dans
Ardea (89(1) 2001)
Most Sparrowhawks Accipiter nisus were present on particular territories for only one breeding season, but others were present on the same territory for up to eight seasons. Short periods of occupancy were due partly to mortality and partly to a[...]
