| Titre : | Journal of Avian Biology 29(2) - JUN 1998 |
| Type de document : | Bulletin |
| Paru le : | 00/00/0000 |
Dépouillements
Article
R. A. Phillips, Auteur ;
R. W. Furness, Auteur
Established pairs of Arctic Skuas Stercorarius parasiticus showed high repeatability in clutch volume (both within and between years), moderate repeatability in laying dates, but low repeatability in chick growth. Males that changed partner show[...]
Article
A. Langefors, Auteur ;
D. Hasselquist, Auteur ;
T. von Schantz, Auteur
Parentage of 201 young (from 44 broods) in a population of Sedge Warblers Acrocephalus schoenobaenus in South Central Sweden, 1990-1992, was determined by using multilocus DNA fingerprinting. The frequency of extra-pair young (EPY) was 7.5% and [...]
Article
M. Nakamura, Auteur ;
H. Kubota, Auteur
The findings from previous food-addition experiments designed to examine the effects of food availability on reproductive parameters could have led to false conclusions because most experimental designs fail to take account of population paramet[...]
Article
E. Minguez, Auteur
The balance between investment in current reproduction and future survival or reproduction may be particularly important to long-lived species. Many of these species are single-egg layers for which incubation costs cannot be realistically measur[...]
Article
J. M. Aparicio, Auteur
Two hypotheses have been suggested to explain why individual variation in breeding time persists. The constraint hypothesis posits that the optimal laying date will be the same for every pair of a population. However, because egg formation is pr[...]
Article
J. P. Swaddle, Auteur ;
R. Lockwood, Auteur
Avoiding predation is an important factor in avian life-history strategies and there are many examples of adaptations that appear to decrease predation risk. However, we are not aware of any studies of structural morphological adaptations to red[...]
Article
V. Bauchau, Auteur ;
H. Horn, Auteur ;
O. Overdijk, Auteur
The Spoonbill populations in Europe are fragmented and threatened. The dynamics of the species is poorly known but ringing and observation programmes are under way. Here we estimated the local survival of two colour-ringed populations of Spoonbi[...]
Article
J. Wright, Auteur
The effect of group size on the productivity of communally-breeding bird species has for many years been linked with the various adaptive explanations for helping-at-the-nest. This study examines the effect of group size on group provisioning ef[...]
Article
C. Barbraud, Auteur ;
P. Jouventin, Auteur
The Snow Petrel Pagodroma nivea is an Antarctic seabird that shows considerable geographic variation and sexual dimorphism in size, males being on average 10% larger than females. The origin and significance of body size variation in this specie[...]
Article
Article
S. A. Tarof, Auteur ;
B. J. M. Stutchbury, Auteur ;
W. H. Piper, Auteur ;
R. C. Fleischer, Auteur
The extent of variation in the frequency of extra-pair matings among and within avian species could result from differences in breeding density, where breeding density is predicted to be positively correlated with extra-pair paternity. We combin[...]
Article
K. Halupka, Auteur
In response to disturbance young of altricial open-nesting birds may leave the nest several days before the usual age for nest leaving. In Meadow Pipits Anthus pratensis, about 60% of broods attacked in the last quarter of the nestling period su[...]
Article
F. R. Hainsworth, Auteur ;
T. Moonan, Auteur ;
M. A. Voss, Auteur ;
K. A. Sullivan, Auteur ;
W. W. Weathers, Auteur
We use a new method to analyze time allocations influencing average egg temperatures during intermittent incubation. It measures relative investment in parental self-maintenance versus embryo development rate, or the extent to which performance [...]
Article
T. Piersma, Auteur ;
M. Ramenofsky, Auteur
Two flocks of Red Knots Calidris canutus, belonging to the temperate-wintering subspecies islandica and to the tropical-wintering subspecies canutus, were kept in outdoor cages at north-temperate latitudes over two annual cycles during which the[...]
Article
S. C. Griffith, Auteur ;
R. Stewart, Auteur
Article
A. Carlson, Auteur
During the last decades the White-backed Woodpecker has shown a precipitous decline in many regions of the western Palearctic, In this study I ask whether detoriation of the forest breeding habitat might have contributed to this population decli[...]
Article
P. Olsen, Auteur ;
S. Barry, Auteur ;
G. B. Baker, Auteur ;
N. Mooney, Auteur ;
G. Cam, Auteur ;
A. Cam, Auteur
Several raptors have been shown to mate assortatively, most commonly according to age, less often in relation to various linear measurements. This paper demonstrates positive assortative mating for winglength in three falcons: the Peregrine Falc[...]
