| Titre : | Journal of Ornithology 149(1) - JAN 2008 |
| Type de document : | Bulletin |
| Paru le : | 00/00/0000 |
Dépouillements
Article
Franziska Tanneberger, Auteur ;
Jochen Bellebaum, Auteur ;
Thomas Fartmann, Auteur ;
Hans-Jochen Haferland, Auteur ;
Angela Helmecke, Auteur ;
Peter Jehle, Auteur ;
Peter Just, Auteur ;
Joachim Sadlik, Auteur
In the last German breeding area of the rapidly declining "Pomeranian" population of the Aquatic Warbler (Acrocephalus paludicola), the Lower Oder Valley National Park, we investigated changes in habitat suitability between 1993 and 2006 by comb[...]
Article
Jose Luis Romero, Auteur ;
Julio Perez, Auteur
During a study of a colour-marked population of Lesser Spotted Woodpecker (LSW) in NE Spain we found two cases of cooperative breeding, in which two females and a male were rearing the brood. One of the females was involved in both cooperative b[...]
Article
Jan Husek, Auteur ;
Peter Adamik, Auteur
Climate change has affected breeding dates and clutch sizes in many bird species. To date, most of the studies aimed at assessing the effects of climate change on these phenological events in birds have been on hole-nesting species and the chang[...]
Article
Tadeusz Zając, Auteur ;
Wojciech Bielański, Auteur ;
Wojciech Solarz, Auteur
Mating tactics in species with facultative polygyny seem to be very flexible and to depend on local environmental conditions. We analysed the habitat and population contexts of territorial behaviour, associated with polygyny, in a population of [...]
Article
Jaana Kekkonen, Auteur ;
Heikki Kolunen, Auteur ;
Hannu Pietiaeinen, Auteur ;
Patrik Karell, Auteur ;
Jon E. Brommer, Auteur
Tawny owl reproduction and offspring sex ratios have been considered to depend on the abundance of small voles. We studied reproductive performance (laying date, clutch and brood size) during 1995-2003 and offspring sex ratios from 1999 to 2003 [...]
Article
Piotr Skorka, Auteur ;
Joanna D. Wojcik, Auteur
The feeding behaviour of the Caspian Gull Larus cachinnans was analysed in southern Poland in 2001. During the pre-breeding period, most birds foraged on a refuse dump and some foraged in a river valley. During incubation, similar numbers of bir[...]
Article
Xin Lu, Auteur
Reproduction of Tickell's Leaf Warblers Phylloscopus affinis was studied in an alpine valley (29 degrees 27'N, 91 degrees 40'E, 3,980-5,600 m) in the Lhasa mountains, Tibet, at the upper elevational limit of the species' breeding range. This spe[...]
Article
Anastasios Dimalexis, Auteur ;
Stavros Xirouchakis, Auteur ;
Danae Portolou, Auteur ;
Panagiotis Latsoudis, Auteur ;
Giorgos Karris, Auteur ;
Jacob Fric, Auteur ;
Panagiotis Georgiakakis, Auteur ;
Christos Barboutis, Auteur ;
Stratis Bourdakis, Auteur ;
Milica Ivovic, Auteur ;
Theodoros Kominos, Auteur ;
Eleftherios Kakalis, Auteur
With more than 80% of the species global population breeding in Greece, Eleonora's Falcon (Falco eleonorae) is reported to be the most important bird species in the country. A national population survey was conducted during the breeding seasons [...]
Article
Craig T. Symes, Auteur ;
Susan W. Nicolson, Auteur ;
Andrew E. McKechnie, Auteur
In southern Africa, Aloe marlothii flowers during the dry winter season and offers copious dilute nectar to a variety of birds. Avian abundance and community composition were monitored at an A. marlothii forest at Suikerbosrand Nature Reserve, S[...]
Article
Christian Dietzen, Auteur ;
Eduardo Garcia-Del-Rey, Auteur ;
Guillermo Delgado Castro, Auteur ;
Michael Wink, Auteur
An analysis of the sequences of the mitochondrial cytochrome b gene (1005 bp) of the Parus teneriffae-group from the Canary Islands and North Africa revealed new insights into the phylogeography of this taxon. The origin of the radiation on the [...]
Article
Ursula Nopp-Mayr, Auteur ;
Margit Zohmann, Auteur
According to the European Bird Directive (Council Directive 79/409/EEC of 2 April 1979 on the conservation of wild birds), particular efforts must be made to preserve the Rock Ptarmigan (Lagopus muta helvetica) and its habitats. Protection and m[...]
Article
Eli S. Bridge, Auteur ;
Jennifer Hylton, Auteur ;
Muir D. Eaton, Auteur ;
Louis Gamble, Auteur ;
Stephan J. Schoech, Auteur
Recent studies of avian vision and plumage coloration have revealed a surprising degree of cryptic sexual dimorphism, with many examples of male-female differences in UV reflectance that are invisible to humans. We examined the potential for mal[...]
Article
Gernot Segelbacher, Auteur ;
Thomas Sacher, Auteur ;
Anke Schwarzenberger, Auteur ;
Sonja Woitsch, Auteur ;
Franz Bairlein, Auteur ;
Timothy Coppack, Auteur
Although the European blackbird, Turdus merula, is one of the most abundant and conspicuous songbirds of the Western Palaearctic and, as such, has been subject of numerous behavioural and ecological studies, there is to date no specific, PCR-bas[...]
Article
Clay E. Corbin, Auteur
In both the Old and New Worlds, independent clades of sit-and-wait insectivorous birds have evolved. These independent radiations provide an excellent opportunity to test whether the relationships between morphology and ecology are concordant am[...]
Article
Anders Enemar, Auteur ;
Jan-Ake Nilsson, Auteur
Reductions in reproductive performance with age have been predicted to result from a general deterioration of performance, i.e. senescence. Variation among species in the onset and rate of this deterioration depends on the age-independent extrin[...]
Article
Rimgaudas Treinys, Auteur ;
Asko Lohmus, Auteur ;
Darius Stoncius, Auteur ;
Saulis Skuja, Auteur ;
Eugenijus Drobelis, Auteur ;
Bronius Sablevicius, Auteur ;
Saulius Rumbutis, Auteur ;
Deivis Dementavičius, Auteur ;
Vladas Narusevicius, Auteur ;
Antanas Petraska, Auteur ;
Danas Augutis, Auteur
Recent trends in the European Black Stork Ciconia nigra population are geographically distinct: range expansion and adaptation to human activity dominate in western and central Europe, while declines-probably induced by landscape change-are repo[...]
