| Titre : | Journal of Ornithology 155(4) - OCT 2014 |
| Type de document : | Bulletin |
| Paru le : | 00/00/0000 |
Dépouillements
Article
A. Leche, Auteur ;
G. Bazzano, Auteur ;
C. Hansen, Auteur ;
J. L. Navarro, Auteur ;
R. H. Marin, Auteur ;
M. B. Martella, Auteur
In recent years, wild populations of Greater Rhea (Rhea americana) have declined drastically, due mainly to the conversion of grassland into cropland as a result of intensive, specialized agricultural practices. In this study we test the potenti[...]
Article
Mikkel A. J. Kvasnes, Auteur ;
Hans Chr Pedersen, Auteur ;
Torstein Storaas, Auteur ;
Erlend B. Nilsen, Auteur
Recruitment of juveniles is important for the size of the next year's breeding population in many bird species. Climate variability and predation may affect recruitment rates, and when these factors are spatially correlated, recruitment rates in[...]
Article
Cristina Perry Nava, Auteur ;
Sin-Yeon Kim, Auteur ;
Maria Carvalho Magalhaes, Auteur ;
Veronica Neves, Auteur
Many bird species rely on visual cues for mate choice, including those provided by body size or by the size of a body appendage. Mate choice based on size may lead to size-assortative mating, which may in turn have consequences for reproductive [...]
Article
Marco Antonio Rego, Auteur ;
Glaucia Del-Rio, Auteur ;
Luís Fábio Silveira, Auteur
The Picumnus exilis complex is composed of 6-7 subspecies distributed from eastern Colombia, through Venezuela, the Guianas, to northern and northeastern Brazil. They are characterized by a greenish back, whitish or yellowish belly (barred or ta[...]
Article
Claudia Schuetz, Auteur ;
Christian H. Schulze, Auteur
Relating eye size differences in birds to aspects of ecology and life history features offers interesting views on selective forces shaping eye size. However, data on eye size is hardly available. We compare two non-invasive methods for measurin[...]
Article
Kerry Perrault, Auteur ;
Lynnea M. Lobert, Auteur ;
Mandy Ehnes, Auteur ;
Jennifer R. Foote, Auteur
We quantified nocturnal vocal behaviour in a North American temperate mixed-forest community using automated recording. We recorded for 2-4 nights at 32 locations and identified 18 species singing at dawn or dusk. Of those 18 species, only two s[...]
Article
Unravelling migration routes and wintering grounds of European rollers using light-level geolocators
Ines Catry, Auteur ;
Teresa Catry, Auteur ;
Jose Pedro Granadeiro, Auteur ;
Aldina M. A. Franco, Auteur ;
Francisco Moreira, Auteur
We used light-level geolocators to track the migratory journey of a globally near-threatened trans-Saharan migrant, the European roller Coracias garrulus, from its breeding grounds in Iberia to its wintering grounds in southern Africa. During au[...]
Article
Abdessalem Hammouda, Auteur ;
Slaheddine Selmi, Auteur ;
Jessica Pearce-Duvet, Auteur
In gull species, the level of carotenoids in egg yolks is known to decrease along the egg laying sequence. However, the extent of this laying order effect is expected to vary among clutches according to laying date, due to possible differences b[...]
Article
Piotr Minias, Auteur
Although blood concentrations of glucose and haemoglobin are known to correlate with nutritional state of individuals, hyperglycaemic states in vertebrates are often linked to anaemia. A negative relationship between blood concentrations of gluc[...]
Article
Nicole A. Schneider, Auteur ;
Michael Griesser, Auteur
Many species produce alarm calls during predator encounters that are directed at either conspecifics or the predator. Although many studies have investigated alarm calls in foraging individuals, antipredator communication during reproduction is [...]
Article
Article
Mathieu Giraudeau, Auteur ;
Margarida Barcelo, Auteur ;
Juan Carlos Senar, Auteur
In many bird species, yearling individuals are less colorful than older ones. However, the causal factors behind this difference of color are for the moment unknown. Here, we used ptilochronology in Great Tits Parus major to assess how nutrition[...]
Article
Dmitry Kobylkov, Auteur ;
Vlad Kosarev, Auteur ;
Andrey Mukhin, Auteur
Despite millions of ringed and recaptured birds, local as well as transient ones, questions about their migratory strategy are still under discussion. Numerous studies of captured individuals do not adequately reflect their behaviors. One of the[...]
Article
Colin Palmer, Auteur
Article
Jiří Porkert, Auteur ;
Sergey Gashkov, Auteur ;
Juha Haikola, Auteur ;
Esa Huhta, Auteur ;
Marja-Liisa Kaisanlahti-Jokimäki, Auteur ;
Boris Kuranov, Auteur ;
Raimo Latja, Auteur ;
Rudolf Mertens, Auteur ;
Alexander Numerov, Auteur ;
Jarkko Rutila, Auteur ;
Arnold Sombrutzki, Auteur ;
Jiří Zajíc, Auteur ;
Eugen Belskii, Auteur ;
Jukka Jokimäki, Auteur ;
Antero Järvinen, Auteur
Changes in the timing of reproduction of birds should provide good evidence of large-scale climate fluctuations. However, geographically separate populations of one species may respond variably. We analyzed egg laying dates of nine Eurasian popu[...]
Article
Samuel Riou, Auteur ;
Olivier Combreau, Auteur
(Lekking is a promiscuous breeding system in which females visit groups of displaying males only for the purpose of mating. The spatial organization of these groups can range from tight aggregations of individuals, or leks, to loose clusters of [...]
Article
Anna-Marie Corman, Auteur ;
Stefan Garthe, Auteur
Avian flight heights are currently a focus of interest in terms of assessing possible impacts of offshore and inland wind farms on birds. We therefore analyzed the flight-height distribution in a tracking study of foraging Lesser Black-backed Gu[...]
Article
Maria M. Benito, Auteur ;
Jacob González-Solís, Auteur ;
Peter H. Becker, Auteur
Offspring phenotypic variation has important consequences for the future survival, reproductive success and individual fitness of nestlings, but the sex-specific reproductive value and fitness returns for parents of this variation have only rare[...]
Article
Juan Arizaga, Auteur ;
Daniel Alonso, Auteur ;
Keith A. Hobson, Auteur
Specialist foragers depend on specific prey commonly associated with limited habitat, which is often patchily distributed. Understanding how specialists use habitat patches is important to their conservation. Crossbills (Loxia spp.) are one of t[...]
Article
Complex animal societies often rely on communal resources from which all individuals in the group derive benefits. Selection should favor individuals that diminish their contribution towards these communal resources, and to increase their consum[...]
Article
Paulina L. Gonzalez-Gomez, Auteur ;
William S. Blakeslee, Auteur ;
Pablo Razeto-Barry, Auteur ;
Rachel M. Borthwell, Auteur ;
Sara M. Hiebert, Auteur ;
John C. Wingfield, Auteur
Hummingbirds present a unique combination between extremely high life costs and a number of efficient adaptations to fuel these demands. In addition to cognitive abilities, territorial hummingbirds display aggressive behaviors that allow for acc[...]
Article
Rainfall on wintering grounds affects population change in many species of Afro-Palaearctic migrants
Nancy Ockendon, Auteur ;
Alison Johnston, Auteur ;
Stephen R. Baillie, Auteur
Survival and population growth rates in several species of Afro-Palaearctic migrant have been shown to correlate with rainfall regimes and/or vegetation level on their African wintering grounds, implying that seasonal food resources may contribu[...]
Article
Alzbeta Darolova, Auteur ;
Jan Kristofik, Auteur ;
Herbert Hoi, Auteur
Habitat choice may have an important impact on survival and fitness of an individual. Besides an individual's intrinsic features, such as resource-holding potential, experience, age, and habitat characteristics like habitat heterogeneity may pla[...]
Article
Adrianna Bruni, Auteur ;
Daniel J. Mennill, Auteur ;
Jennifer R. Foote, Auteur
The avian dawn chorus is a daily period of high song output performed predominantly during the breeding season. Dawn chorus performance varies at both the individual and species level. The many extrinsic factors that may relate to dawn chorus st[...]
Article
Kirsten Grond, Auteur ;
Hodon Ryu, Auteur ;
Allan J. Baker, Auteur ;
Jorge W. Santo Domingo, Auteur ;
Deborah M. Buehler, Auteur
Migratory birds travel long distances and use diverse habitats, potentially exposing them to a broad range of microbes that could negatively affect their health and survival. Gut microbiota composition may be related to organismal health especia[...]
Article
Stephen A. Czerkas, Auteur ;
Alan Feduccia, Auteur
Re-examination utilizing Keyence 3D digital microscopy and low angled illumination of the fossil Scansoriopteryx, a problematic sparrow-size pre-Archaeopteryx specimen from the Jurassic Daohugou Biotas, provides new evidence which challenges the[...]
Article
Kevin Kuhlmann Clausen, Auteur ;
Jesper Madsen, Auteur
Ringing and marking are widely used techniques in avian ecology to assist studies of migration, survival and behaviour, and often used to estimate population sizes. Only rarely, however, have the effects of these markings on bird viability been [...]
