| Titre : | Journal of Avian Biology 36(3) - MAY 2005 |
| Type de document : | Bulletin |
| Paru le : | 00/00/0000 |
Dépouillements
Article
P. G. P. Ericson, Auteur ;
A. L. Jansen, Auteur ;
U. S. Johansson, Auteur ;
J. Ekman, Auteur
Phylogenetic relationships were studied based on DNA sequences obtained from all recognized genera of the family Corvidae sensu stricto. The aligned data set consists 2589 bp obtained from one mitochondrial and two nuclear genes. Maximum parsimo[...]
Article
L. G. Halsey, Auteur ;
S. E. Wallace, Auteur ;
A. J. Woakes, Auteur ;
H. Winkler, Auteur ;
P. J. Butler, Auteur
Work against buoyancy during submergence is a large component of the energy costs for shallow diving ducks. For penguins, buoyancy is less of a problem, however they still seem to trade-off levels of oxygen stores against the costs and benefits [...]
Article
J. Moreno, Auteur ;
S. Merino, Auteur ;
J. J. Sanz, Auteur ;
E. Arriero, Auteur ;
J. Morales, Auteur ;
G. Tomas, Auteur
Offspring body mass and hatching date have been proposed as useful correlates of post-fledging survival and recruitment probability in studies of avian populations. However, these links may be mediated by underlying physiological variables which[...]
Article
D. Serrano, Auteur ;
J. L. Tella, Auteur ;
E. Ursua, Auteur
Hatching failure is a pervasive phenomenon in birds, but factors affecting hatchability remain poorly understood. We studied proximate causes and fitness consequences of hatching failure in a long-monitored population of the colonial lesser kest[...]
Article
M. Stervander, Auteur ;
K. Lindström, Auteur ;
N. Jonzen, Auteur ;
A. Andersson, Auteur
We studied long-term trends and the yearly variation in mean spring passage time in 36 passerine bird species trapped at Ottenby Bird Observatory in south-eastern Sweden. Between the years 1952-2002, data were available for 22-45 years depending[...]
Article
E. Yohannes, Auteur ;
K. A. Hobson, Auteur ;
D. J. Pearson, Auteur ;
L. I. Wassenaar, Auteur
The potential use of stable nitrogen (delta(15)N), carbon (delta(13)C) and hydrogen (6D) isotope ratios in feathers of marsh warblers Acrocephalus palustris, river warblers Locustella fluviatilis and whitethroats Syluia communis was evaluated as[...]
Article
P. D. O'Hara, Auteur ;
G. Fernandez, Auteur ;
F. Becerril, Auteur ;
H. de la Cueva, Auteur ;
D. B. Lank, Auteur
The propensity of migratory waders to remain on the non-breeding grounds during the arctic breeding season ("oversummer") in their first biological year of life ("juveniles") may be latitude, and thus migratory distance dependent. We compared th[...]
Article
F. Mougeot, Auteur ;
S. M. Redpath, Auteur ;
F. Leckie, Auteur
In many birds, females prefer males with the biggest or brightest sexual ornaments. which might reflect a higher phenotypic quality, Such as fewer parasites. Unlike humans, most birds detect near-ultraviolet (UV) light, and UV signals can play a[...]
Article
P. Catry, Auteur ;
M. Lecoq, Auteur ;
A. Araujo, Auteur ;
G. Conway, Auteur ;
M. Felgueiras, Auteur ;
J. M. B. King, Auteur ;
S. Rumsey, Auteur ;
H. Salima, Auteur ;
P. Tenreiro, Auteur
Differential migration is a widespread, but poorly understood. phenomenon in birds. In this paper, we present the first detailed Field study of differential migration in the Old World warbler (Sylviidae) family. We studied two chiffchaff Phyllos[...]
Article
N. E. Koopman, Auteur ;
D. B. McDonald, Auteur ;
G. D. Hayward, Auteur ;
K. Eldegard, Auteur ;
G. A. Sonerud, Auteur ;
S. G. Sermach, Auteur
Boreal owls Aegolizis funereus (referred to as Tengmalm's owls in Europe) breed in boreal forests throughout the Holarctic region and in high-elevation subalpine forests further south. They are currently classified as seven subspecies; six found[...]
Article
A. D. Fox, Auteur ;
L. Bergersen, Auteur
The feeding ecology of barnacle geese and pink-footed geese was studied in Sassendalen, Svalbard during the pre-nesting period (late May) to assess the potential for inter-specific competition. Barnacle geese fed almost exclusively (97%) by graz[...]
