| Titre : | Journal of Avian Biology 31(4) - DEC 2000 |
| Type de document : | Bulletin |
| Paru le : | 00/00/0000 |
Dépouillements
Article
U. Wiktander, Auteur ;
O. Olsson, Auteur ;
S. G. Nilsson, Auteur
The sexes' share in parental care and the social mating system in a marked population of the single-brooded Lesser Spotted Woodpecker Dendrocopos minor were studied in 17 woodpecker territories in southern Sweden during 10 years. The birds showe[...]
Article
P. Galeotti, Auteur ;
G. Tavecchia, Auteur ;
A. Bonetti, Auteur
The responses of male and female Long-eared Owls to a human approaching the nest were examined. Each nest was only tested once. Nest defence increased significantly throughout the breeding season because older chicks were defended more strongly [...]
Article
W. A. Buttemer, Auteur ;
L. B. Astheimer, Auteur
We examined physiological and morphological responses of reproductively active male White-plumed Honeyeaters Lichenostomus penicillatus to exogenous testosterone (T). Birds used in the experiment were held in captivity for two weeks and then wer[...]
Article
S. M. Redpath, Auteur ;
B. M. Appleby, Auteur ;
S. J. Petty, Auteur
Bird song structure may honestly reveal the health and vigour of individual males to potential mates and competitors. If this is the case then song may reflect the level of parasitic infections in males. We initially examined the relationship be[...]
Article
K. Susanna S. Hall, Auteur ;
Thord Fransson, Auteur
Migrating passerines moulting in the breeding quarters before autumn migration sometimes end up with less time than needed for a normal moult. To deal with this the birds could for example suspend moult or moult faster. In this paper we investig[...]
Article
M. C. Hansson, Auteur ;
S. Bensch, Auteur ;
O. Brannstrom, Auteur
The Chiffchaff Phylloscopus collybita is represented in Sweden by two different subspecies; the northern well-established abietinus and the southern recently established collybita which has expanded its range northward during the past two decade[...]
Article
J. Moreno, Auteur ;
L. Boto, Auteur ;
J. A. Fargallo, Auteur ;
A. De Leon, Auteur ;
J. Potti, Auteur
We analysed genetic relatedness through DNA-fingerprinting in 38 two-chick families of Chinstrap Penguins Pygoscelis antarctica in the Vapour Col colony on Deception Island, Antarctica. Band-sharing coefficients between males and chicks in their[...]
Article
P. I. Mitchell, Auteur ;
I. Scott, Auteur ;
P. R. Evans, Auteur
During severe weather, Redshanks suffer the heaviest mortality amongst all the shorebird species wintering around the North Sea coasts of the British Isles. An earlier study had suggested that this resulted from a failure to accumulate sufficien[...]
Article
X. Ruiz, Auteur ;
L. Jover, Auteur ;
V. Pedrocchi, Auteur ;
D. Oro, Auteur ;
J. Gonzalez-Solis, Auteur
During the Audouin's Gull's breeding season at the Ebro Delta in 1993,
Article
N. Cadee, Auteur
Fluctuating asymmetry may impair locomotion but may also reflect intrinsic phenotypic quality. I tested whether fluctuating asymmetry of adult Barn Swallows Hirundo rustica negatively influenced offspring quality, by estimating the relationship [...]
Article
M. Monkkonen, Auteur ;
T. E. Martin, Auteur
Importance of within-species (population) variation in trait values to correlations of traits among species has received very little attention in comparative analyses. We use randomization and bootstrapping techniques to provide a sensitivity an[...]
Article
G. E. Hill, Auteur
Carotenoid pigments are used by many bird species as feather colorants, creating brilliant yellow, orange, and red plumage displays. Such carotenoid-based plumage coloration has been shown to function as an honest signal that is used in female m[...]
Article
J. Figuerola, Auteur
The relationship between host ecology and feather mite prevalence was analysed in birds. Feather mites are small arthropods (fam. Pterolichoidea and Analgoidea) commonly found on birds, although the nature of their interactions with the host (co[...]
Article
J. M. Starck, Auteur ;
E. Sutter, Auteur
Megapode batchlings are ''superprecocial" compared to hatchlings of other Galliformes. In this paper, we examine patterns of growth and inquire about evolutionary processes that led to different degrees of precocity at hatching in Galliformes. T[...]
Article
D. Ward, Auteur
Classical polyandry in birds is rare and is most Frequent in the shorebirds (Charadriiformes). Polyandrous shorebirds lag. smaller eggs for their body masses than non-polyandrous shorebirds, indicating that polyandrous female shorebirds may trad[...]
Article
J. S. Bradley, Auteur ;
J. M. Cox, Auteur ;
L. W. Nicholson, Auteur ;
R. D. Wooller, Auteur ;
K. C. Hamer, Auteur ;
J. K. Hill, Auteur
The single young of shearwaters grows slowly and is fed at long, often highly variable, intervals. We monitored the growth patterns of nestling Short-tailed Shearwaters Puffinus tenuirostris exchanged between nests in order to assess whether the[...]
Article
J. Merilä, Auteur ;
C. Hemborg, Auteur
Individual variation in the degree of feather wear is potentially a useful marker of individual quality or fitness, but next to nothing is known about causes and fitness consequences of feather wear in birds. We studied the effects of sex, age, [...]
Article
V. V. Pravosudov, Auteur ;
J. R. Lucas, Auteur
Many birds could expend substantially less energy at night by using hypothermia, but generally do not. This suggests that the potential savings als offset by costs; one of these costs is presumed to be the risk of predation at night. If this ass[...]
