| Titre : | Journal of Avian Biology 30(1) - MAR 1999 |
| Type de document : | Bulletin |
| Paru le : | 00/00/0000 |
Dépouillements
Article
R. Wiltschko, Auteur ;
U. Munro, Auteur ;
H. Ford, Auteur ;
W. Wiltschko, Auteur
Migratory birds can use celestial and magnetic cues to locate their migratory direction. The relative importance of the two cue systems was analyzed by testing Australian Silvereyes for their orientation behaviour in a cue-conflict situation dur[...]
Article
L. Flynn, Auteur ;
E. Nol, Auteur ;
Y. Zharikov, Auteur
Philopatry, nest-site tenacity, and mate fidelity were examined in a population of Semipalmated Plovers Charadrius semipalmatus breeding near Churchill, Manitoba, Canada from 1992 to 1997. Natal philopatry was low (7 of 445 (1.57%) hatchlings re[...]
Article
P. A. R. Hockey, Auteur ;
J. K. Turpie, Auteur ;
E. E. Plaganyi, Auteur ;
T. E. Phillips, Auteur
The foraging behaviour of five plover species was studied at Mida Creek. Kenya to assess how foraging behaviour is influenced by bird body size and:or diet. All five plovers had functionally identical instantaneous foraging behaviour, but the pr[...]
Article
D. P. Whitfield, Auteur ;
W. Cresswell, Auteur ;
N. P. Ashmole, Auteur ;
N. A. Clark, Auteur ;
A. D. Evans, Auteur
During a 10-year study at two adjacent Scottish sites we tested the null hypotheses that Sparrowhawks Accipiter sisus selected overwintering Redshanks Tringa totanus independently of body size and condition, There was no significant difference i[...]
Article
S. K. Finney, Auteur ;
S. Wanless, Auteur ;
M. P. Harris, Auteur
A detailed investigation of the effects of weather conditions on the feeding behaviour of a pursuit diving seabird, the Common Guillemot Uria aalge, was carried out during the chick-rearing period at a colony in southeast Scotland in 1997. There[...]
Article
H. Galbraith, Auteur ;
J. J. Hatch, Auteur ;
I. C. T. Nisbet, Auteur ;
T. H. Kunz, Auteur
We used doubly-labelled water to measure field metabolic rates of breeding Common Terns Sterna hirundo, and hence to investigate differences in reproductive efficiency among birds of different ages. Field metabolic rates, activity patterns, chan[...]
Article
D. Lepage, Auteur ;
A. Desrochers, Auteur ;
G. Gauthier, Auteur
Late-nesting birds frequently have a lower reproductive success than early-nesting ones. This could be a consequence of seasonal variations in environmental conditions or because Bate-nesting parents an of lower quality than early-nesting ones. [...]
Article
M. Eens, Auteur ;
R. Pinxten, Auteur
When studying egg removal as a host defence against brood parasitism, most researchers have assumed that only females eject parasitic eggs. We examined the response of captive male and female Spotless Starlings to experimental intraspecific nest[...]
Article
J. L. Telleria, Auteur ;
R. Carbonell, Auteur
This paper analyses the variation of several morphological traits in five populations of Blackcaps Sylvia atricapilla distributed along a latitudinal gradient in the Iberian peninsula. The northern and central populations differ from the souther[...]
Article
A. K. Fridolfsson, Auteur ;
H. Ellegren, Auteur
Molecular sexing is an attractive means to determine the sex of sexually monomorphic birds, e.g, chicks of mast species. A universal approach for molecular sexing of birds would require that a conserved W chromosome-linked sequence could be anal[...]
Article
M. E. Mermoz, Auteur ;
G. J. Fernandez, Auteur
Interspecific brood parasitism is a strong selective force that has favoured the evolution of anti-parasite strategies. The Shiny Cowbird Molothrus bonariensis is a generalist parasite that uses more than 200 species as hosts. Scarlet-headed Bla[...]
Article
P. J. Cordero, Auteur ;
J. H. Wetton, Auteur ;
D. T. Parkin, Auteur
One of the potential benefits of extra-pair copulation is an enhanced likelihood of successful fertilization if the pair male is unable to produce sufficient viable sperm to ensure the fertility of an entire clutch. Los male fertility can be a t[...]
Article
I. R. Hartley, Auteur ;
S. C. Griffith, Auteur ;
K. Wilson, Auteur ;
M. Shepherd, Auteur ;
T. Burke, Auteur
We used a PCR-SSCP assay to sex 288 nestling Corn Buntings Milaria calandra from 113 clutches studied between 1988 and 1990 in the Western Isles, Scotland. In each year the sex ratio was not statistically different from 1:1. Brood sex ratios did[...]
Article
P. J. Cordero, Auteur ;
J. H. Wetton, Auteur ;
D. T. Parkin, Auteur
Females of socially monogamous bird species frequently accept or solicit copulations with males other than their social mate. It has been proposed that in so doing females either gain direct benefits such as increased likelihood of fertilization[...]
Article
S. J. Reynolds, Auteur ;
S. Waldron, Auteur
The body water dynamics of egg-laying Zebra Finches Taeniopygia guttata was investigated by isotopic dilution of deuterium oxide or D(2)O. Two successive doses of D(2)O were administered to each hen, once during a non-reproductive period and onc[...]
Article
A. Zahavi, Auteur
Article
H. Poysa, Auteur ;
M. Milonoff, Auteur ;
V. Ruusila, Auteur ;
J. Virtanen, Auteur
Habitat edges affect several ecological phenomena, usually known as the edge-effect concept. One of its basic principles is the ecological trap hypothesis which assumes that birds are attracted to nest near habitat edges where food supplies may [...]
Article
J. Wright, Auteur
Zahavi (1995) refutes the logic of kin selection and reciprocity, and proposes an alternative signalling explanation for the evolution of altruism. This paper expands upon Zahavi's promising "altruism as a handicap" argument, in which "altruists[...]
