| Titre : | Ardea 107(2) - June, 2019 |
| Type de document : | Bulletin |
| Paru le : | 01/06/2019 |
Dépouillements
Article
Luka Jurinovic, Auteur ;
Mate Zec, Auteur ;
Vlatka Dumbovic Mazal, Auteur ;
Jelena Kralj, Auteur
The Audouin's Gull Larus audouinii is endemic to the Mediterranean, with the majority of the global population concentrated in Spain. It mainly feeds on small pelagic fish during the night; however, there is more variation in the foraging behavi[...]
Article
Hans Meltofte, Auteur ;
Jan Durinck, Auteur ;
BENT Jakobsen, Auteur ;
Claus Nordstrom, Auteur ;
FRANK F. Riget, Auteur
On the East Atlantic Flyway, where mid-winter counts of waterbirds have taken place for half a century, there is still uncertainty about trends in the sizes of several wader populations. For example, extensive breeding bird monitoring in boreal [...]
Article
Timo Pakkala, Auteur ;
Juha Tiainen, Auteur ;
Markus Piha, Auteur ;
Jari Kouki, Auteur
Primary cavity-producers such as woodpeckers produce nest sites for several other cavity-nesting animals and, thus, are often considered to be keystone species. However, the persistence and occupancy rates of cavities are rarely known and as suc[...]
Article
Morrison Thomas Pot, Auteur ;
Susan de Koning, Auteur ;
Coen Westerduin, Auteur ;
Willem Frederik de Boer, Auteur ;
Mitra Shariati, Auteur ;
Thomas Koert Lameris, Auteur
Migratory birds need considerable energy reserves to fuel long-distance flights to their breeding grounds in spring. To attain sufficient energy deposits before departure, birds require high daily intake rates, which can be reached by utilizing [...]
Article
Piotr Indykiewicz, Auteur ;
Piotr Minias, Auteur
Two or three gull species (Laridae) commonly breed together in one colony, often caused by a shortage of optimal breeding sites or as an anti-predator behaviour. Observers usually assume that the benefits of colonial breeding outweigh potential [...]
Article
Lucinda C. Zawadzki, Auteur ;
Richard R. Veit, Auteur ;
Lisa L. Manne, Auteur
Understanding the causes of vagrancy among migratory bird species is of increasing importance as climate change threatens species' survival. Vagrancy may serve to safeguard populations from environmental change through expansion of their geograp[...]
Article
Katarina Denac, Auteur ;
Primož Kmecl, Auteur ;
Urska Koce, Auteur
Farmland birds in the European Union have declined by 57% in the past 35 years, raising the need for efficient, large-scale conservation measures to halt and reverse their negative trends. The Eurasian Scops Owl Otus scops is an indicator of ext[...]
Article
Angela Wieringa, Auteur ;
Raymond H. G. Klaassen, Auteur ;
Almut E. Schlaich, Auteur ;
Ben J. Koks, Auteur
In many owl and raptor species, sexes have distinct parental roles. Females incubate the eggs and raise the chicks until independence, while males provide females and their chicks with food. This is believed to reduce sexual conflict over parent[...]
Article
Theunis Piersma, Auteur
Article
Hans Meltofte, Auteur ;
Jan Durinck, Auteur ;
BENT Jakobsen, Auteur ;
Claus Nordstrom, Auteur ;
FRANK F. Riget, Auteur
On the East Atlantic Flyway, where mid-winter counts of waterbirds have taken place for half a century, there is still uncertainty about trends in the sizes of several wader populations. For example, extensive breeding bird monitoring in boreal [...]
