| Titre : | Journal of Avian Biology 33(4) - DEC 2002 |
| Type de document : | Bulletin |
| Paru le : | 00/00/0000 |
Dépouillements
Article
B. Arroyo, Auteur
I evaluate causes and patterns of nestling mortality in a sexually dimorphic species, the Montagu's harrier Circus pygargus, and their relationship with sex and condition. Starvation was apparently the main reason for nestling death. Condition o[...]
Article
M. M. Landys-Ciannelli, Auteur ;
J. Jukema, Auteur ;
T. Piersma, Auteur
Bar-tailed godwits; migrate from West African wintering sites to breeding areas in northern Russia with only one stopover. We compared hematocrit (Het), blood hemoglobin concentration (Hb), and mean cell hemoglobin concentration (MCHb; a measure[...]
Article
C. Braillet, Auteur ;
A. Charmantier, Auteur ;
F. Archaux, Auteur ;
A. Dos Santos, Auteur ;
P. Perret, Auteur ;
M. M. Lambrechts, Auteur
Although the causes and consequences of social dominance have been examined extensively, avian studies have rarely focused on between-population differences in social dominance. On the island of Corsica, two resident blue tit Parus caeruleus pop[...]
Article
R. M. Zink, Auteur
Article
J. Valkama, Auteur ;
E. Korpimäki, Auteur ;
J. Wiehn, Auteur ;
T. Pakkanen, Auteur
We examined inter-clutch egg size variation of Eurasian kestrels Falco tinnunculus in western Finland over a period of 12 years, during which their main prey, Microtus voles. fluctuated in three-year population cycles. Females that bred twice in[...]
Article
I. Bartol, Auteur ;
Z. Karcza, Auteur ;
C. Moskat, Auteur ;
E. Roskaft, Auteur ;
T. Kisbenedek, Auteur
Egg rejection behaviour towards parasitic eggs was studied in a great reed warbler Acrocephalus arundinaceus population in central Hungary, which was heavily (about 65%.) parasitised by the common cuckoo Cuculus canorus. Clutches were experiment[...]
Article
Several bird species breeding in acidified habitats face serious problems caused by lowered availability of calcium-rich foods. Moreover, recent studies have revealed that calcium shortage causes phenotypic variation in certain reproductive para[...]
Article
T. L. F. Martins, Auteur ;
J. K. Blakey, Auteur ;
J. Wright, Auteur
The frequency of extra-pair paternity in a wild colony of swifts Apus apus was determined by multilocus DNA fingerprinting in two successive breeding seasons. The data were used to examine the expectation that extra-pair paternity is frequent in[...]
Article
K. G. Salvante, Auteur ;
T. D. Williams, Auteur
Daily variation in circulating levels of the avian yolk precursor, vitellogenin (VTG), throughout the laying cycle was investigated in female zebra finches Taeniopygia guttata and compared with predicted ovarian follicle demand (based on a model[...]
Article
R. Probst, Auteur ;
M. Pavlicev, Auteur ;
J. Viitala, Auteur
Diurnal raptors have been shown to use ultraviolet vision and UV-reflecting vole scent marks to find suitable hunting areas. We studied if a passerine species, the great grey shrike Lanius excubitor that uses votes as its primary food, may also [...]
Article
A. Cibois, Auteur ;
M. V. Kalyakin, Auteur ;
L. X. Han, Auteur ;
E. Pasquet, Auteur
The babblers (Timaliidae) form a large songbird family, which achieves its highest diversity in South-East Asia. As part of an ongoing phylogenetic investigation of this group, we focus here on the systematic position of two Asian genera, Yuhina[...]
Article
J. Rutila, Auteur ;
R. Latja, Auteur ;
K. Koskela, Auteur
We examined redstart Phoenicurus phoenicurus populations over a period of fifteen years to study interactions between the Cuckoo Cuculus canorus and its cavity-nesting host. Over 380 redstart nests were checked and more than 100 cuckoo eggs were[...]
Article
S. M. Engstrand, Auteur ;
S. Ward, Auteur ;
D. M. Bryant, Auteur
We used the doubly-labelled water technique to measure daily energy expenditure (DEE) of a free-living uniparental incubator, the white-throated dipper Cinclus cinclus, in Scotland. DEE was 205 +/- 8 (s.e.m.) kJ d(-1) for 17 females incubating t[...]
Article
P. Byholm, Auteur ;
J. E. Brommer, Auteur ;
P. Saurola, Auteur
In many populations of size dimorphic birds, brood sex ratios change with advancing laying date. The slopes of these trends, however, vary in time and space, both between and within species. We studied brood sex ratios (proportion of males) of n[...]
Article
T. Amundsen, Auteur ;
P. T. Brobakken, Auteur ;
A. Moksnes, Auteur ;
E. Roskaft, Auteur
The evolutionary equilibrium hypothesis explains the existence of both acceptors and rejecters of brood parasite eggs within a host population as resulting from a balance between the costs of acceptance and the costs of recognition errors. In su[...]
Article
R. A. Stillman, Auteur ;
J. D. Goss-Custard, Auteur
The response of foraging animals to human disturbance can be considered as a trade-off between the increased perceived predation risk of tolerating disturbance and the increased starvation risk of not feeding and avoiding disturbance. We show ho[...]
Article
S. Akesson, Auteur ;
G. Walinder, Auteur ;
L. Karlsson, Auteur ;
S. Ehnbom, Auteur
We used radio-telemetry to study autumn migratory flight initiation and orientation in relation to wind and air pressure in a nocturnal passerine migrant, the reed warbler Acrocephalus scirpaceus at Falsterbo, southwest Sweden. The majority of t[...]
Article
D. B. Lank, Auteur
Article
R. A. Mulder, Auteur ;
R. Ramiarison, Auteur ;
R. E. Emahalala, Auteur
Two male plumage morphs, 'white' and 'rufous', coexist in the Madagascar paradise flycatcher Terpsiphone mutata. There has been enduring debate about whether this dimorphism in male plumage represents seasonal dichromatism, delayed plumage matur[...]
Article
F. Grieco, Auteur
Food provisioning in birds requires a considerable amount of time and usually has to be traded-off against other parental and non-parental activities. I investigated experimentally the rate at which blue tit Parus caeruleus parents deliver food [...]
