| Titre : | Journal of Ornithology 147(1) - JAN 2006 |
| Type de document : | Bulletin |
| Paru le : | 00/00/0000 |
Dépouillements
Article
G. Urios, Auteur ;
Alejandro Martinez-Abrain, Auteur
This study addresses nesting-site preferences in Eleonora's falcon Falco eleonorae by means of geographic information systems and high-quality high-resolution digital terrain models (DTMs). A small western Mediterranean archipelago (Columbretes [...]
Article
C. S. Roselaar, Auteur ;
T. G. Prins, Auteur ;
M. Aliabadian, Auteur ;
V. Nijman, Auteur
The incidence of hybridisation in birds differs greatly between orders and is expected to be low in orders comprising few species. The divers or loons (Gaviiformes) are a species-poor group in which apparent hybridisation has been reported infre[...]
Article
P. H. Becker, Auteur ;
C. C. Voigt, Auteur ;
J. M. Arnold, Auteur ;
R. Nagel, Auteur
We describe a non-invasive technique to obtain blood samples from incubating birds without trapping and handling. A larval instar of the blood-sucking bug Dipetalogaster maximus (Heteroptera) was put in a hollowed artificial egg which was placed[...]
Article
D. Durant, Auteur ;
M. Kersten, Auteur ;
H. Fritz, Auteur ;
H. Juin, Auteur ;
M. Lila, Auteur
The coastal marshes of the Charente-Maritime (western France) are a major wintering area for wigeon Anas penelope. In these marshes, wigeon feed mainly on grasses, while foraging on Salicornia (a fleshy, succulent halophyte) is uncommon. In orde[...]
Article
P. Pechacek, Auteur ;
K. G. Michalek, Auteur ;
H. Winkler, Auteur ;
D. Blomqvist, Auteur
We report two cases of simultaneous, social polyandry in the three-toed woodpecker Picoides tridactylus found in Berchtesgaden National Park, Germany during an 11-year study. The first case was between two neighbouring pairs in 2003. A female in[...]
Article
M. Wikelski, Auteur ;
E. M. Tarlow, Auteur ;
C. M. Eising, Auteur ;
T. G. G. Groothuis, Auteur ;
E. Gwinner, Auteur
Plasma melatonin concentrations in most animals investigated so far increase at night regardless of whether individuals are day or night active. Nevertheless, daily melatonin amplitudes are often seasonally adjusted to ecological conditions, wit[...]
Article
P. López-López, Auteur ;
C. Garcia-Ripolles, Auteur ;
J. Aguilar, Auteur ;
F. Garcia-Lopez, Auteur ;
J. Verdejo, Auteur
Predictive models on breeding habitat preferences of Bonelli's eagle (Hieraaetus fasciatus; Aves: Accipitridae) have been performed at four different spatial scales in Castellon province, East of Iberian Peninsula. The scales considered were: (1[...]
Article
W. Wickler, Auteur ;
U. Seibt, Auteur ;
D. Schmidl, Auteur
We present an analysis of song type differences between populations of seven forest weaver (Ploceus bicolor) subspecies. Phonology and syntax of the melodious parts of song types differ between these populations to the same extent as they differ[...]
Article
T. Arndt, Auteur
Prompted by field observations in 2001 in the Utcubamba Valley, Peru, a study was undertaken of 130 specimens in the Aratinga mitrata complex. As a result, the traditional arrangement of Aratinga mitrata (A. m. mitrata Tschudi 1844 and A. m. alt[...]
Article
J. Figuerola, Auteur ;
A. J. Green, Auteur
The factors explaining interspecific differences in clutch investment in precocial birds are poorly understood. We investigated how variations in clutch characteristics are related to environmental factors in a comparative study of 151 extant sp[...]
Article
A. Soutullo, Auteur ;
V. Urios, Auteur ;
M. Ferrer, Auteur
We tracked the daily movements of three juvenile golden eagles (Aquila chrysaetos) using satellite telemetry. Straight distances covered in an hour and throughout a day were calculated. Daily movements of golden eagles are mostly characterized b[...]
Article
T. Schaefer, Auteur ;
G. Ledebur, Auteur ;
J. Beier, Auteur ;
B. Leisler, Auteur
Comparative analyses of interspecific differences in response to climate change can provide important insights into the factors initiating seasonal onset of reproduction in various species and subsequent fitness consequences. We present a compar[...]
Article
P. E. Jorge, Auteur ;
L. Vicente, Auteur
This study compares the initial orientation and homing performance of young inexperienced pigeons following their transportation to near and distant places in total darkness (treatment) and their subsequent release. The birds were housed in two [...]
Article
G. Mayr, Auteur
Two new specimens of the fossil stem group galliform Paraortygoides messelensis Mayr 2000 (Gallinuloididae) are described from the Middle Eocene of Messel in Germany, including a complete skeleton in which the hitherto unknown skull of this spec[...]
