| Titre : | Journal of Ornithology 152(4) - OCT 2011 |
| Type de document : | Bulletin |
| Paru le : | 00/00/0000 |
Dépouillements
Article
Timothee Bonnet, Auteur ;
Per Kristian Slagsvold, Auteur ;
Glenn-Peter Saetre, Auteur
One male Ficedula flycatcher, breeding in southeast Norway, was identified in the field as a putative hybrid between the Pied Flycatcher F. hypoleuca and the Collared Flycatcher F. albicollis due to the presence of a partial neck collar and othe[...]
Article
Steven J. Portugal, Auteur ;
Patrick J. Butler, Auteur ;
Jonathan A. Green, Auteur ;
Phillip Cassey, Auteur
Bone is continually undergoing cycles of apposition and resorption referred to as adaptive remodelling. We tested the hypothesis that captive moulting Barnacle Geese (Branta leucopsis) would show adaptive bone mineralisation during the flightles[...]
Article
Radka Reifova, Auteur ;
Pavel Kverek, Auteur ;
Jiri Reif, Auteur
Understanding the mechanisms causing reproductive isolation between incipient species can give important insights into the process of species origin. Here, we describe a record of a hybrid female between two closely related bird species, the Com[...]
Article
Zbigniew M. Bochenski, Auteur ;
Teresa Tomek, Auteur ;
Malgorzata Bujoczek, Auteur ;
Krzysztof Wertz, Auteur
We describe a nearly complete articulated specimen representing a new species and genus, Jamna szybiaki gem et sp. nov., of an early Oligocene passeriform bird from Poland. In overall osteology, the specimen resembles extant Passeriformes but it[...]
Article
Anja Cervencl, Auteur ;
Wiebke Esser, Auteur ;
Martin Maier, Auteur ;
Nadine Oberdiek, Auteur ;
Stefan Thyen, Auteur ;
Arndt Wellbrock, Auteur ;
Klaus-Michael Exo, Auteur
The effects of predation on Common Redshanks Tringa totanus incubation patterns and behaviour was investigated in 2006 and 2007 at three mainland study sites at the Jadebusen and at one study site on the island Wangerooge, Wadden Sea National Pa[...]
Article
Pedro M. Lourenço, Auteur ;
Rosemarie Kentie, Auteur ;
Julia Schroeder, Auteur ;
Niko M. Groen, Auteur ;
Jos C. E. W. Hooijmeijer, Auteur ;
Theunis Piersma, Auteur
When early breeding is advantageous, migrants underway to the breeding areas may be time stressed. The timing of sequential events such as migration and breeding is expected to be correlated because of a "domino effect", and would be of particul[...]
Article
The Predation Danger Hypothesis suggests that shorebirds adjust aspects of their annual schedules to limit the amount of time they are exposed to the danger posed by the presence of Peregrine Falcons (Falco peregrinus) and other raptors. For exa[...]
Article
Fushing Hsieh, Auteur ;
Chao-Chieh Chen, Auteur
Foraging niche overlap between attendant species and the nuclear species of mixed-species flocks may induce competition as well as facilitation. In this study, we hypothesized that canopy species would appear more frequently in flocks where nucl[...]
Article
The scale of movements that passerine migrants perform during stopover is an important parameter of avian stopover ecology and behaviour. The scale of daytime movements has been estimated by captures of losing track of individuals that perform t[...]
Article
Martin Kapun, Auteur ;
Alzbeta Darolova, Auteur ;
Jan Kristofik, Auteur ;
Katharina Mahr, Auteur ;
Herbert Hoi, Auteur
In a few bird species, dimorphism already exists in nestling and juvenile plumage coloration and these colour morphs are often attributable to different sexes. In this study we detected variation in nestling coloration among European Bee-eaters [...]
Article
Karen Bourgeois, Auteur ;
Justine Vorenger, Auteur ;
Lucie Faulquier, Auteur ;
Jerome Legrand, Auteur ;
Eric Vidal, Auteur
The Yelkouan Shearwater Puffin us yelkouan is a Procellariiform endemic to the Mediterranean Basin, recently categorised as Near Threatened on the IUCN Red List. We need to identify the threats it faces, which are particularly poorly understood [...]
Article
Juan Arizaga, Auteur ;
Eduardo J. Belda, Auteur ;
Emilio Barba, Auteur
Meteorological conditions, fuel load and date in the season can affect the departure decisions among migratory birds. However, it is poorly understood to what extent the departure decisions are more influenced by some parameters in relation to o[...]
Article
Michael Wink, Auteur ;
Detlef Becker, Auteur ;
Dirk Tolkmitt, Auteur ;
Verena Knigge, Auteur ;
Hedi Sauer-Guerth, Auteur ;
Heidi Staudter, Auteur
This paper provides for the first time an insight into the breeding system of the Eurasian Wryneck (Jynx torquilla). DNA fingerprinting and molecular sexing were used to investigate paternity, mating system and sex allocation in a population nea[...]
Article
Jacopo G. Cecere, Auteur ;
Fernando Spina, Auteur ;
Susanne Jenni-Eiermann, Auteur ;
Luigi Boitani, Auteur
Nectar exploitation by European birds mainly refers to passerines feeding on exotic plants, although some recent studies described nectar-feeding by trans-Saharan passerines on local plants. We examined which birds and plants are involved in nec[...]
Article
Lucia Turčoková, Auteur ;
Václav Pavel, Auteur ;
Bohumír Chutný, Auteur ;
Adam Petrusek, Auteur ;
Tereza Petrusková, Auteur
Differences in vocalization between subspecies of songbirds may influence intraspecific interactions including mate choice and territorial behavior, and contribute to their further divergence by strengthening premating reproductive isolation. We[...]
Article
Nicholas J. Bayly, Auteur ;
Stephen J. R. Rumsey, Auteur ;
Jacquie A. Clark, Auteur
The bi-annual crossing of the Sahara desert is a considerable energetic challenge faced by approximately a quarter of Europe's total bird population, as they migrate to and from sub-Saharan non-breeding grounds. Where, when and how migratory bir[...]
Article
Katie A. Lowe, Auteur ;
Charlotte E. Taylor, Auteur ;
Richard E. Major, Auteur
In Australia, the introduced Common Myna (Acridotheres tristis) is commonly believed to aggressively displace native birds and outcompete them for food and nest resources. However, the current paucity of scientific evidence makes it difficult to[...]
Article
Guillermo Lopez, Auteur ;
Ramon Soriguer, Auteur ;
Jordi Figuerola, Auteur
Studies of signalling and sexual selection in birds are increasingly focussing on the regulation of the expression of carotenoid-based ornaments. Brighter coloured ornaments are preferred during mate choice and are thought to signal resistance t[...]
Article
Albert Cama, Auteur ;
Pere Josa, Auteur ;
Joan Ferrer-Obiol, Auteur ;
Jose Manuel Arcos, Auteur
Knowledge of the winter distribution of the Mediterranean Gull Larus melanocephalus is poor. The limited and geographically patchy data on the species' winter distribution is of concern because current estimates of the wintering population do no[...]
Article
Clara Garcia-Ripolles, Auteur ;
Pascual López-López, Auteur
Population viability analyses (PVAs) are a useful technique in risk-assessment studies aimed at determining which demographic parameters are most influential in population persistence. Here, we incorporate demographic and environmental stochasti[...]
Article
Indriķis Krams, Auteur ;
Dina Cīrule, Auteur ;
Tatjana Krama, Auteur ;
Jolanta Vrublevska, Auteur
In high latitudes, thermoregulatory and behavioural adjustments of birds allow survival under extreme ambient temperatures, changing day length, and food availability. In such habitats with such fluctuating environmental conditions, dominant ind[...]
Article
Mousumi Ghosh, Auteur ;
Pratap Singh, Auteur ;
Dhananjai Mohan, Auteur
We studied a guild of overwintering Phylloscopus warblers (Hume's Warbler, Grey-hooded Warbler, Lemon-rumped Warbler) in the Himalayan foothills to gain an understanding of the manner in which they respond to changes in their habitat structure a[...]
Article
Alvina Leche, Auteur ;
Juan M. Busso, Auteur ;
Joaquin L. Navarro, Auteur ;
Cristian Hansen, Auteur ;
Raul H. Marin, Auteur ;
Monica B. Martella, Auteur
The Greater Rhea (Rhea americana) is a near-threatened species. Wild populations are affected by human activities, such as illegal hunting, egg harvesting and conversion of natural habitats to croplands. An indicator of disturbance:; is the incr[...]
Article
C. J. Camphuysen, Auteur ;
Harry J. P. Vercruijsse, Auteur ;
Arie L. Spaans, Auteur
The Herring Gull population in The Netherlands went through phases of exploitation, protection, persecution and again (partial) protection during the nineteenth and twentieth centuries. The numbers of breeding pairs peaked in the 1980s at approx[...]
Article
Food niche differentiation in two syntopic sunbird species: a case study from the Cameroon Mountains
Jan Riegert, Auteur ;
Drahomira Fainova, Auteur ;
Marcin Antczak, Auteur ;
Ondřej Sedláček, Auteur ;
David Hořák, Auteur ;
Jiri Reif, Auteur ;
Michal Pesata, Auteur
Closely related bird species can coexist in areas of range overlap due to differentiation of their ecological niches. If coexisting species have similar habitat requirements, separation of food niches presumably plays a crucial role. Theoretical[...]
Article
Diego Gonzalez-Zevallos, Auteur ;
Pablo Yorio, Auteur
We evaluated discard consumption by Kelp Gulls (Larus dominicanus) and Black-browed Albatrosses (Thalassarche melanophrys) associated with trawlers operating at Golfo San Jorge, Argentina, and assessed differences in their feeding behaviour, pre[...]
