| Titre : | Journal of Avian Biology 31(2) - JUN 2000 |
| Type de document : | Bulletin |
| Paru le : | 00/00/0000 |
Dépouillements
Article
J. A. Nicholls, Auteur ;
M. C. Double, Auteur ;
D. M. Rowell, Auteur ;
R. D. Magrath, Auteur
Most birds breed in pairs but at least 3% of passerine species are cooperative breeders, whereby more than two adults help to raise the young. The general rarity of cooperative breeding has led to the assumption that cooperative behaviour has ev[...]
Article
J. M. Hipfner, Auteur
A recent experimental study reported that Thick-billed Murre Uria lomvia chicks that hatched from large eggs grew their wing feathers more quickly than did small-egg chicks. There is little evidence of this (or any other) egg-size effect on post[...]
Article
W. D. Robinson, Auteur ;
T. R. Robinson, Auteur ;
S. K. Robinson, Auteur ;
J. D. Brawn, Auteur
Greater nest predation in tropical than temperate birds has been hypothesized to be a primary selective force generating latitudinal differences in avian life history traits. Few extensive data sets, however, have been available from tropical fo[...]
Article
C. P. Bell, Auteur
Current ideas about the evolution of bird migration equate its origin with the first appearance of fully migratory populations, and attribute its evolution to a selective advantage generated by increased breeding success, gained through temporar[...]
Article
Several studies on mass loss during breeding in female birds have shown a significant correlation between initial body mass and subsequent loss of body mass, The significant positive regression coefficient of mass loss on initial mass was interp[...]
Article
I. Newton, Auteur ;
P. Rothery, Auteur
Ring recoveries were used to explore the effect of early experience on the subsequent survival and dispersal of young Sparrowhawks in two areas in south Scotland. Young raised on high grade territories were recovered in greater proportion than y[...]
Article
M. Green, Auteur ;
T. Alerstam, Auteur
Aerodynamic theories of bird flight predict that horizontal flight speed will increase with increasing load whereas vertical Eight speed will decrease. Horizontal flight speed for birds minimizing overall time on migration is predicted to be hig[...]
Article
L. Naef-daenzer, Auteur ;
B. Naef-daenzer, Auteur ;
R. G. Nager, Auteur
We studied the nestling diet and the foraging performance of Great Tits in relation to prey abundance in the field. Numerous experimental studies present data on foraging decisions in captive Great Tits. Little is, however, known about prey sele[...]
Article
C. P. F. Redfern, Auteur ;
A. E. J. Slough, Auteur ;
B. Dean, Auteur ;
J. L. Brice, Auteur ;
P. H. Jones, Auteur
During the night of 29-30 October 1995, over 600 Redwings Turdus iliacus died as a result of flying into the lighthouse at Bardsey, Gwynedd, North Wales. These migrating birds were used to investigate Eat levels in relation to age, sex, biometri[...]
Article
I. G. Henderson, Auteur ;
P. J. B. Hart, Auteur ;
T. Burke, Auteur
In this study we used DNA fingerprinting to provide an accurate measure of paternity in a nest-box colony of Jackdaws. The species is a semi-colonial, socially monogamous passerine which establishes long-term pair bonds. Parents raise a single a[...]
Article
S. Hurtrez-bousses, Auteur ;
F. Renaud, Auteur ;
Jacques Blondel, Auteur ;
P. Perret, Auteur ;
M. J. Galan, Auteur
In altricial birds, adults are expected to alleviate the impact of parasitism on their young by increasing parental care. We experimentally investigated the effects of blowfly parasitism on adult behaviour in the nest cavity in a population of B[...]
Article
Article
R. E. Ricklefs, Auteur
Actuarial senescence in captive populations of 28 species of bird was quantified by estimating the parameters of Weibull models fitted to survival curves constructed from data obtained from toes. Samples of natural and captive populations were c[...]
Article
R. D. Magrath, Auteur ;
R. G. Heinsohn, Auteur
In recent years there has been a resurgence of interest in models to explain the partitioning of direct reproduction ('reproductive skew") among members of one ses within social groups, We review models of skew identify problems of testing model[...]
Article
H. Skov, Auteur ;
J. Durinck, Auteur ;
P. Andell, Auteur
We investigated the distributional dynamics of piscivorous seabirds in relation to the distribution of young fish outside the breeding season in the Skagerrak and Kattegat, using synoptic bottom trawl and seabird surveys. Kittiwake Rissa tridact[...]
Article
J. P. Veiga, Auteur ;
L. Boto, Auteur
The importance that the density of breeders has on the opportunity for extra-pair fertilisations (EPFs) is controversial. Some evidence supports the idea that population density and frequency of extra-pair paternity are positively associated, wh[...]
Article
E. Korpimäki, Auteur ;
C. A. May, Auteur ;
D. T. Parkin, Auteur ;
J. H. Wetton, Auteur ;
J. Wiehn, Auteur
Variation of brood sex ratio was studied in a Finnish population of Eurasian Kestrels Falco tinnunculus breeding in an unpredictably variable environment. From those young that survived until 2-4 weeks of age, blood was collected and their sex d[...]
Article
D. J. Moore, Auteur ;
T. D. Williams, Auteur ;
R. D. Morris, Auteur
We assessed the nutritional importance of male provisioning to females during egg production and its effects on clutch parameters (egg size, length of the laying period) in Common Terns Sterna hirundo: (1) we estimated the costs of egg productio[...]
Article
I. L. Jones, Auteur ;
F. M. Hunter, Auteur ;
G. Fraser, Auteur
We investigated patterns of variation of Feather and bill ornaments of Crested Auklets Aethia cristatella, a monogamous seabird, based on 963 individuals measured in the years 1990 to 1998. Three prominent ornaments were displayed: a forehead cr[...]
