| Titre : | Ardea 99(1) - SPR 2011 |
| Type de document : | Bulletin |
| Paru le : | 00/00/0000 |
Dépouillements
Article
Elena L. Zozaya, Auteur ;
Lluis Brotons, Auteur ;
Sara Vallecillo, Auteur
Mediterranean forests are highly resilient to fires, showing a rapid recovery after disturbance. However, in some cases direct tree regeneration fails leading to radical changes in landscape composition. In this study, we evaluated the impact of[...]
Article
Arne Hegemann, Auteur ;
Rob Voesten, Auteur
The Common Cuckoo Cuculus canorus is an obligate brood parasite and many studies have dealt with egg rejection by host species. However, evidence for ejection of Cuckoo nestlings by host parents has not been reported. Here we describe an observa[...]
Article
André Konter, Auteur
In birds, coloniality is considered to be evolutionary more advanced than solitary breeding. Territorial Great Crested Grebes Podiceps cristatus may engage in opportunistic colonial breeding. The present study focuses on behavioural aspects asso[...]
Article
Ricardo Tome, Auteur ;
Maria P. Dias, Auteur ;
Ana Claudia Chumbinho, Auteur ;
Carolina Bloise, Auteur
We compared the diurnal hunting behaviour of a mainly perch-hunting species, the Little Owl Athene noctua, in two structurally different habitats: a treeless pseudo-steppe and a Holm Oak Quercus hex rotundifolia woodland in Portugal. While the o[...]
Article
Prey delivery rates as estimates of prey consumption by Eurasian Kestrel Falco tinnunculus nestlings
Ronny Steen, Auteur ;
Line M. Low, Auteur ;
Geir A. Sonerud, Auteur ;
Vidar Selås, Auteur ;
Tore Slagsvold, Auteur
In altricial birds the type of prey selected by parents for their nestlings may affect the allocation of time and energy spent on hunting, preparing prey and feeding the nestlings, which in turn may affect the rate of provisioning. Raptors take [...]
Article
Noelia Albano, Auteur ;
José A. Masero, Auteur ;
Juan M. Sánchez-Guzmán, Auteur ;
Auxiliadora Villegas, Auteur ;
Francisco Santiago-Quesada, Auteur
Despite the extensive literature on energy assimilation efficiency in birds, only a few studies have dealt specifically with offspring, and to our knowledge there is no information on macronutrient assimilation efficiencies during the growth per[...]
Article
Minna Ruokonen, Auteur ;
Tomas Aarvak, Auteur
Taxonomic practices change over time and this affects the number of taxonomical units recognized. In late 19th and early 20th centuries the number of species increased as a consequence of typological thinking, i.e. classifying all aberrant indiv[...]
Article
Beata Czyz, Auteur
In contrast to older models of parental care, recent theoretical models assume that parents do not make their decisions independently of one another, but respond to the behaviour of their mates. Studies involving mate removal have mostly been co[...]
Article
R. Probst, Auteur ;
H. L. Nemeschkal, Auteur ;
M. McGrady, Auteur ;
M. Tucakov, Auteur ;
T. Szep, Auteur
We analysed 291 attacks by 15 male Hobbies Falco subbuteo at 13 different Sand Martin Riparia riparia colonies in Austria, Hungary, and Serbia in 2004 and 2005. We predicted that the choice of escape strategy would be context-dependent and relat[...]
Article
Jose Alfredo Castillo-Guerrero, Auteur ;
Miguel A. Guevara-Medina, Auteur ;
Eric Mellink, Auteur
We studied the breeding ecology of Red-billed Tropicbirds Phaethon aethereus at Farallon de San Ignacio, Sinaloa, in the south-central part of the Gulf of California, during two years with different oceanographic conditions: 2004, a neutral year[...]
Article
Jacopo G. Cecere, Auteur ;
Laura Cornara, Auteur ;
Serena Mezzetta, Auteur ;
Andrea Ferri, Auteur ;
Fernando Spina, Auteur ;
Luigi Boitani, Auteur
At stopovers sites in the Sahara and on Mediterranean islands, European warblers may feed on nectar. As a consequence of this behaviour the pollen of exploited plants often sticks on the birds' bill or plumage. We analyzed pollen samples carried[...]
Article
Csongor I. Vágási, Auteur ;
Péter L. Pap, Auteur ;
Jacint Toekoelyi, Auteur ;
Edina Szekely, Auteur ;
Zoltán Barta, Auteur
The most important function of moult in birds is the renewal of deteriorated feathers. Worn and holey remiges may incur fitness costs, yet little is known about the factors responsible for the degree of feather wear and sources of variation in f[...]
Article
Yahkat Barshep, Auteur ;
Clive Minton, Auteur ;
Les G. Underhill, Auteur ;
Magdalena Remisiewicz, Auteur
The population moult parameters, yearly onset of moult and sex-specific schedule of moult in relation to breeding success, and pattern of feather mass growth were examined in a population of Curlew Sandpipers Calidris ferruginea that migrate to [...]
Article
Alejandro Onrubia, Auteur ;
Antonio-Roman Munoz, Auteur ;
Gonzalo M. Arroyo, Auteur ;
Juan Ramirez, Auteur ;
AndreS De la Cruz, Auteur ;
Luis Barrios, Auteur ;
Bernd-U. Meyburg, Auteur ;
Christiane Meyburg, Auteur ;
Torsten Langgemach, Auteur
The Lesser Spotted Eagle (LSE) migrates to its winter quarters via the eastern Mediterranean corridor. During 1998 to 2009, 47 LSEs have been registered in the Strait of Gibraltar during a monitoring program of bird migration. All observations w[...]
