| Titre : | Ardea 96(1) - SPR 2008 |
| Type de document : | Bulletin |
| Paru le : | 00/00/0000 |
Dépouillements
Article
Arie J. van Noordwijk, Auteur ;
David L. Thomson, Auteur
The Netherlands holds internationally important numbers of Black-tailed Godwits Limosa limosa, and reports of a substantial population decline have prompted concern. One way of narrowing the list of possible causes of this decline is to identify[...]
Article
André Konter, Auteur
A field study at the Dutch IJsselmeer on colonial nesting of Great Crested Grebe Podiceps cristatus over four breeding seasons focused on the phenomenon of breeding aggregation. Grebes settled in two types of habitat: 'Bulrush' and 'Reed'. Pairs[...]
Article
Hans Kallander, Auteur
Flock-fishing, i.e. when a tight group of birds moves in a coordinated way under more or less synchronous diving, is common in cormorants Phalacrocorax spp. and mergansers Mergus spp., but is said in the major handbooks not to occur in Great Cre[...]
Article
René E. van Dijk, Auteur ;
Arjen E. Pilon, Auteur ;
Istvan Szentirmai, Auteur ;
Tamás Székely, Auteur ;
Jan Komdeur, Auteur
Spatial and temporal distributions of resources and habitats often influence breeding systems. These influences are particularly relevant in those species that exhibit variable breeding systems. We studied such a species, the Penduline Tit Remiz[...]
Article
Elsa Jourdain, Auteur ;
Michel Gauthier-Clerc, Auteur ;
Yves Kayser, Auteur ;
Murielle Lafaye, Auteur ;
Philippe Sabatier, Auteur
Migratory movements of juvenile Purple Herons from the Camargue area in France were studied by satellite-tracking. Six juvenile birds were fitted with transmitters in early July 2004. Of these six, four successfully started migration in Septembe[...]
Article
Gregorio Moreno-Rueda, Auteur ;
Manuel Pizarro, Auteur
This study explores the relationship between richness of bird species and climate in Spain, distinguishing groups of species according to biogeographic type. Species richness proved to be related to temperature but in a different way for each of[...]
Article
Abdelkrim Si Bachir, Auteur ;
Christophe Barbraud, Auteur ;
Salaheddine Doumandji, Auteur ;
Heinz Hafner, Auteur
Native to the Indo-African area, the Cattle Egret Bubulcus ibis is now a cosmopolitan species, still in great range expansion. The factors affecting breeding success of the species remain however poorly known, and here we investigate the breedin[...]
Article
Stavros M. Xirouchakis, Auteur ;
Nikos Poulakakisi, Auteur
In the present study we describe the morphometrics of 97 live Eurasian Griffon Vultures Gyps fulvus collected on the island of Crete (Greece) and a sex determination model on the basis of various field techniques and multivariate data analysis. [...]
Article
Christoph Randler, Auteur
Hybrid zones provide a unique opportunity to study the dynamics of isolation barriers. Pre-zygotic isolation through assortative or conspecific mating is thought to be an important aspect of reinforcement and speciation. Although assortative mat[...]
Article
Mai Yasue, Auteur ;
P. Dearden, Auteur
In shorebirds, the prevalence of successive clutching and types of associated breeding strategies differ among species, environments and individuals. Although several studies have examined successive clutching behaviour in holarctic species, lit[...]
Article
Peter G. Ryan, Auteur ;
Erica Sommer, Auteur ;
Eugene Breytenbach, Auteur
Adult penguins eaten at sea form a large proportion of the diet of giant petrels Macronectes spp. it is widely assumed that they are scavenged after being killed or injured by more agile predators such as fur seals Arctocephalus spp. We observed[...]
Article
Iñigo Zuberogoitia, Auteur ;
José Enrique Martínez, Auteur ;
Jabi Zabala, Auteur ;
Jose Antonio Martinez, Auteur ;
Ainara Azkona, Auteur ;
Inaki Castillo, Auteur ;
Sonia Hidalgo, Auteur
Species may act simultaneously as competitor and predator for other species at the same trophic level. This is known as Intraguild Predation (IGP). Most research on this topic describes the final steps of this phenomenon, when one species suffer[...]
Article
Ruben Liminana, Auteur ;
Álvaro Soutullo, Auteur ;
Pascual López-López, Auteur ;
Vicente Urios, Auteur
Pre-migratory and migratory movements of Montagu's Harrier Circus pygargus, a long-distance migrant, are poorly documented by ring recoveries and observations. In the present study, we tagged 10 adult Montagu's Harriers in NE Spain with satellit[...]
Article
Theunis Piersma, Auteur
An individually colour-ringed House Martin Delichon urbica, molecularly confirmed to be a female, after attending a first brood in early July 2007, became engaged with two second broods at the same time, one with the original mate of the first b[...]
Article
Natalia Karlionova, Auteur ;
Wlodzimierz Meissner, Auteur ;
PAVEL Pinchuk, Auteur
We studied the development of breeding plumage in 641 Ruff Philomachus pugnax males during spring in 2004-2006 in southern Belarus with special emphasis on the growth rate of ruff and tuft feathers, which are the most colourful and spectacular p[...]
Article
Dominance relationships in Dark-bellied Brent Geese Branta bernicla bernicla at spring staging areas
Maud Poisbleau, Auteur ;
Diane Desmonts, Auteur ;
Hervé Fritz, Auteur
Spring staging is an important period influencing reproductive success for migratory birds. During this period, female geese must accumulate reserves for subsequent migration, egg laying and incubation. They may increase feeding opportunities by[...]
Article
Julia Schroeder, Auteur ;
Pedro M. Lourenço, Auteur ;
Marco Van Der Velde, Auteur ;
Jos C. E. W. Hooijmeijer, Auteur ;
Christiaan Both, Auteur ;
Theunis Piersma, Auteur
Systematic sex-related differences in size and plumage are informative of sex-specific selection pressures. Here, we present an analysis of sexual dimorphism in body size and plumage of Black-tailed Godwits Limosa limosa limosa from a breeding p[...]
