| Titre : | Journal of Ornithology 156(2) - 2015/01/13 |
| Type de document : | Bulletin |
| Paru le : | 13/01/2015 |
Dépouillements
Article
Chentao Wei, Auteur ;
Chenxi Jia, Auteur ;
Lu Dong, Auteur ;
Daiping Wang, Auteur ;
Canwei Xia, Auteur ;
Yanyun Zhang, Auteur ;
Wei Liang, Auteur
Studies on the pattern of geographic variation in bird vocalizations can facilitate the understanding of the evolutionary history of species and species differentiation. The Common Cuckoo (Cuculus canorus) is a non-passerine widely distributed i[...]
Article
Keely R. Corder, Auteur ;
Paul J. Schaeffer, Auteur
Physiology–life history interactions suggest that birds living with a fast ‘pace-of-life’ should have higher metabolic capacity to provision higher reproductive activity. Previous work supports this, but does not consider migration. We measured [...]
Article
Linda Visinoni, Auteur ;
Claire Agnès Pernollet, Auteur ;
Jean-François Desmet, Auteur ;
Fränzi Korner-Nievergelt, Auteur ;
Lukas Jenni, Auteur
The Alpine Rock Ptarmigan (Lagopus muta helvetica)—which is adapted to arctic and alpine environments—is suspected to be vulnerable to climate warming, but direct evidence is limited. Microclimates within a landscape may allow species to exist i[...]
Article
Sexual selection theory suggests that the degree of protandry in spring migration should increase when earlier males benefit from better mating opportunities. Western European studies failed to show differences in sex-specific arrival dates for [...]
Article
Ute Stenkewitz, Auteur ;
Ólafur K. Nielsen, Auteur ;
Karl Skírnisson, Auteur ;
Gunnar Stefánsson, Auteur
The spleen and bursa of Fabricius in birds are organs that play an important role in fighting parasite infections. The size of these organs can be used by ecologists as a measure of immune investment, with larger size implying greater investment[...]
Article
Bobby Habig, Auteur ;
David C. Lahti, Auteur
Synchronous fleeing (i.e. “dreads” or “panic flights”) is a frequently observed but rarely quantified behaviour in colonial birds. Here we analyse video recordings to assess synchronous fleeing behaviour in a Village Weaver (Ploceus cucullatus) [...]
Article
Stefan Abrahamczyk, Auteur ;
Michael Kessler, Auteur
Hummingbirds are the most specialised nectarivorous birds and show close ecological relationships to their food plants. Their small body size, bright colors, and unique behaviour have fascinated generations of naturalists. In this review, we inv[...]
Article
Emi Arai, Auteur ;
Masaru Hasegawa, Auteur ;
Masahiko Nakamura, Auteur ;
Kazumasa Wakamatsu, Auteur
Plumage color is a composite trait and each component can provide information regarding individual quality. Melanin-based color is one of the most common plumage coloration in birds. This color comprises two types of melanin pigments: eumelanin [...]
Article
Aleš Svoboda, Auteur ;
Gunnhild Marthinsen, Auteur ;
Václav Pavel, Auteur ;
Bohumír Chutný, Auteur ;
Lucia Turčoková, Auteur ;
Jan T. Lifjeld, Auteur ;
Arild Johnsen, Auteur
Long-distance migratory birds are potentially exposed to a range of blood sucking arthropods that transmit avian blood parasites. Because of differential vector exposure, the parasite fauna may vary in different habitat types, among populations,[...]
Article
Frédéric Angelier, Auteur ;
Carol M. Vleck, Auteur ;
Rebecca L. Holberton, Auteur ;
Peter P. Marra, Auteur
Telomere length (TL) has been shown to be a potential predictor of survival in wild vertebrates, and, as a consequence, there is growing interest in understanding the causes of inter-individual variability in TL. In that context, developmental c[...]
Article
Gerald Mayr, Auteur
New specimens of Scaniacypselus szarskii, a stem group representative of the Apodidae (true swifts) from the middle Eocene Messel oilshale in Germany, are described. These fossils show that Scaniacypselus differs from crown group Apodidae in a n[...]
Article
Markéta Zárybnická, Auteur ;
Jan Riegert, Auteur ;
Karel Št’astný, Auteur
Anthropogenic activity can lead to deforestation and subsequent dramatic impacts on forest-dwelling animal species. In this study, we investigated the habitat use of a forest raptor (Tengmalm’s Owl Aegolius funereus) in an air-polluted area of t[...]
Article
Dispersal is one of the least understood features in the life-history of organisms. Theoretical work concentrates on explaining dispersal of organisms in patchy and heterogeneous landscapes, but there are few predictions of dispersal patterns in[...]
Article
Jordi Pascual, Auteur ;
Juan Carlos Senar, Auteur
The body mass of birds is the result of a trade-off between predation and starvation risks. According to the mass-dependent predation hypothesis, birds reduce their body mass when predation risk increases. Many studies have supported this hypoth[...]
Article
Marcin Podlaszczuk, Auteur ;
Zbigniew Wojciechowski, Auteur ;
Patrycja Podlaszczuk, Auteur ;
Piotr Minias, Auteur ;
Tomasz Janiszewski, Auteur ;
Agnieszka Wojciechowska, Auteur
Several different selective pressures have been suggested to explain an intense competition for early return to breeding grounds in birds. In this study we hypothesized that shortening day length during summer months may constitute additional se[...]
Article
Céline Arzel, Auteur ;
Johan Elmberg, Auteur
We studied time budgets and foraging methods in pre-breeding Mallard Anas platyrhynchos, (Eurasian) Teal Anas crecca, Wigeon Anas penelope, Pintail Anas acuta, Shoveler Anas clypeata and Gadwall Anas strepera in subarctic Norway in May. Among al[...]
Article
Juan Arizaga, Auteur ;
Gerard Bota, Auteur ;
David Mazuelas, Auteur ;
Pablo Vera, Auteur
In birds, spatial segregation between age or sex categories during the non-breeding period is a common phenomenon. The main single-factor hypotheses that have been stated to explain this are: (1) body-size variations (that result in more or less[...]
Article
Edward L. Evans Iii, Auteur ;
Juan E. Martínez-Gómez, Auteur ;
Ravinder N. M. Sehgal, Auteur
The Socorro Warbler (Setophaga pitiayumi graysoni) is currently classified as a subspecies of the Tropical Parula. This bird is endemic to Socorro Island, and due to the island’s distance from mainland Mexico and likely low levels of gene flow f[...]
Article
Tree-cavity availability and selection by a large-bodied secondary cavity-nester: the Military Macaw
Sylvia Margarita de la Parra-Martínez, Auteur ;
Katherine Renton, Auteur ;
Alejandro Salinas-Melgoza, Auteur ;
Luis Guillermo Muñoz-Lacy, Auteur
Large-bodied secondary cavity-nesters are constrained to use cavities of sufficient size to permit access, while also selecting characteristics to reduce predation. However, no information exists on nest-site availability for large-bodied second[...]
Article
Michał Budka, Auteur ;
Lucyna Wojas, Auteur ;
Tomasz S. Osiejuk, Auteur
Acoustically identifying individuals may be a helpful technique when it is necessary to monitor animal populations over space and time. Previous studies have largely focused on the theoretical exploitation of vocal individuality or have looked a[...]
Article
Annika Konovalov, Auteur ;
Katrin Kaldma, Auteur ;
Andriy Bokotey, Auteur ;
Paul Brossault, Auteur ;
Frederic Chapalain, Auteur ;
Marina Dmitrenok, Auteur ;
Natalie Dzyubenko, Auteur ;
Urmas Sellis, Auteur ;
Māris Strazds, Auteur ;
Luc Strenna, Auteur ;
Rimgaudas Treinys, Auteur ;
Piotr Zieliński, Auteur ;
Ülo Väli, Auteur
Sex ratio is an indicator of population health as unexpected biases may indicate potential threats. We studied nestling sex ratio in Black Stork Ciconia nigra populations in order to check potential biases and differences along east–west and nor[...]
