| Titre : | Ibis : The International Journal of Avian Science 153(1) - JAN 2011 |
| Type de document : | Bulletin |
| Paru le : | 01/01/2011 |
Dépouillements
Article
Martin Irestedt, Auteur ;
Magnus Gelang, Auteur ;
George Sangster, Auteur ;
Urban Olsson, Auteur ;
Per G. P. Ericson, Auteur ;
Per Alström, Auteur
We present molecular evidence that Neumann's Warbler Hemitesia neumanni is deeply nested within the Cettiidae. The species' distribution in the Albertine Rift of East Africa is intriguing, as the family Cettiidae is principally an Asian radiatio[...]
Article
Travis E. Wilcoxen, Auteur ;
Eli S. Bridge, Auteur ;
Raoul K. Boughton, Auteur ;
Michelle A. Rensel, Auteur ;
S. James Reynolds, Auteur ;
Stephan J. Schoech, Auteur
Hatching failure within clutches of eggs occurs to varying degrees in many avian species. We investigated predictors of hatching failure in a population of Florida Scrub-Jays, for which hatching success has been monitored for 15 years. We assess[...]
Article
Ralf Edler, Auteur ;
Wolfgang Goymann, Auteur ;
Ingrid Schwabl, Auteur ;
Thomas W. P. Friedl, Auteur
The immunocompetence handicap hypothesis (ICHH) posits that the hormone testosterone mediates a trade-off between investment in reproduction and immunological condition. In this study, we tested the ICHH in the Red Bishop Euplectes orix, a polyg[...]
Article
Luzia Naef-Daenzer, Auteur ;
Martin U. Grueebler, Auteur ;
Beat Naef-Daenzer, Auteur
In seasonal environments with limited time and energy resources, double-brooded birds face trade-offs in the timing of their two reproductive attempts and in the effort allocated to the first and the second broods. In the Barn Swallow Hirundo ru[...]
Article
Gustau Calabuig, Auteur ;
Joaquin Ortego, Auteur ;
Jose Miguel Aparicio, Auteur
In colonial species, first-time breeders may use the number of settled conspecifics in colony selection, but such a relationship is confused by the correlation between colony size and nest-site availability. To distinguish conspecific attraction[...]
Article
Rob H. Field, Auteur ;
Anthony J. Morris, Auteur ;
Phil V. Grice, Auteur ;
Andrew Cooke, Auteur
Environmental Stewardship (ES) is the main mechanism for reversing the decline in farmland birds in England, and includes a range of options designed to provide winter foraging for seed-eating species. We estimated granivorous songbird densities[...]
Article
Vincent Bretagnolle, Auteur ;
Alexandre Villers, Auteur ;
Leopold Denonfoux, Auteur ;
Thomas Cornulier, Auteur ;
Pablo Inchausti, Auteur ;
Isabelle Badenhausser, Auteur
The Little Bustard has undergone a steep reduction of its Western Palaearctic range over the last century. In the west of France, breeding populations declined by 96% from 1978 to 2008 in cultivated areas where grasslands have been converted int[...]
Article
Blair O. Wolf, Auteur ;
Kent A. Hatch, Auteur
Article
Hans-Guenther Bauer, Auteur ;
Friederike Woog, Auteur
Article
Florencia Bulit, Auteur ;
Viviana Massoni, Auteur
Life-histories and demographic parameters of southern temperate bird species have been little studied. We estimated return rates between years and sexes, and adult apparent survival and recapture probabilities with mark-recapture data on White-r[...]
Article
Diederik Strubbe, Auteur ;
Erik Matthysen, Auteur
Little is known about the foraging ecology of invasive bird species in Europe. We used radio-telemetry to assess home-ranges of breeding male Ring-necked Parakeets in Brussels. Results indicate that parakeets primarily forage in parks and garden[...]
Article
Laura Kvist, Auteur ;
David Giralt, Auteur ;
Francisco Valera, Auteur ;
Herbert Hoi, Auteur ;
Anton Krištín, Auteur ;
Giorgi Darchiashvili, Auteur ;
Peter Lovaszi, Auteur
The Lesser Grey Shrike has suffered successive declines in population size and a marked contraction of its breeding range since the early 20th century, largely because of long-term agricultural intensification. This has resulted in a severely fr[...]
Article
Per Alström, Auteur ;
Jon Fjeldså, Auteur ;
Silke Fregin, Auteur ;
Urban Olsson, Auteur
The Scrub Warbler, which inhabits arid areas from North Africa to western Asia, has long been thought to be closely related to cisticolid warblers. However, analyses based on two mitochondrial and four nuclear loci place this species sister to t[...]
Article
Vicente Garcia-Navas, Auteur ;
Juan Jose Sanz, Auteur
A common feature of many birds breeding in seasonal environments is that fitness-related parameters such as nestling mass or survival decline as the breeding season progresses. Consequently, there is a tendency for early breeders to have better [...]
Article
J. W. Pearce-higgins, Auteur ;
R. B. Bradbury, Auteur ;
D. E. Chamberlain, Auteur ;
A. Drewitt, Auteur ;
R. H. W. Langston, Auteur ;
S. G. Willis, Auteur
Article
Gregorio Moreno-Rueda, Auteur
This study assesses whether uropygial gland size is related to improved feather quality. To address this question, I analysed the relationship between uropygial gland size and feather wear in the House Sparrow Passer domesticus. The results show[...]
Article
Ruben H. Heleno, Auteur ;
Georgina Ross, Auteur ;
Amy Everard, Auteur ;
Jane Memmott, Auteur ;
Jaime A. Ramos, Auteur
Seed dispersal is a central process in plant ecology with consequences for species composition and habitat structure. Some bird species are known to disperse the seeds they ingest, whereas others, termed 'seed predators', digest them and apparen[...]
Article
Jeremy J. Hatch, Auteur ;
Ian C. T. Nisbet, Auteur
Manipulation of clutch size during incubation has been used in a number of studies to investigate life-history costs of incubation. We increased or decreased clutches of Common Terns Sterna hirundo during incubation and measured subsequent chick[...]
Article
Craig R. White, Auteur ;
David Boertmann, Auteur ;
David Grémillet, Auteur ;
Patrick J. Butler, Auteur ;
Jonathan A. Green, Auteur ;
Graham R. Martin, Auteur
Arctic seas have warmed and sea ice has retreated. This has resulted in range contraction and population declines in some species, but it could potentially be a boon for others. Great Cormorants Phalacrocorax carbo have a partially wettable plum[...]
Article
Mark C. Mainwaring, Auteur ;
Megan Dickens, Auteur ;
Ian R. Hartley, Auteur
The outcome of sibling competition for food is often determined by variation in body size within the brood and involves trade-offs; traits that enhance competitive ability within the nest may be developed at the expense of traits that enable eff[...]
Article
Ines Catry, Auteur ;
Maria P. Dias, Auteur ;
Teresa Catry, Auteur ;
Vsevolod Afanasyev, Auteur ;
James Fox, Auteur ;
Aldina M. A. Franco, Auteur ;
William J. Sutherland, Auteur
The population decline of the Lesser Kestrel Falco naumanni has been the subject of studies across its Western Palaearctic breeding range, but little is known about its use of pre-migratory areas or African wintering quarters. We used geolocator[...]
Article
Tendai Musvuugwa, Auteur ;
Philip A. R. Hockey, Auteur
Clutch sizes of gamebirds decrease in a hyperbolic fashion towards the equator, but their clutch investment (total clutch mass as a proportion of female body weight) does not vary with latitude, regardless of whether body mass and phylogeny are [...]
Article
Dominik Thiel, Auteur ;
Susanne Jenni-Eiermann, Auteur ;
Rupert Palme, Auteur ;
Lukas Jenni, Auteur
Montane and alpine habitats in Europe remained relatively undisturbed until the beginning of the last century. Today, outdoor recreation activities are a major economic factor in alpine regions. Many tourism areas coincide with winter habitats o[...]
Article
Neil M. Dawson, Auteur ;
Colin D. Macleod, Auteur ;
Malcolm Smith, Auteur ;
Norman Ratcliffe, Auteur
Many of the UK's seabird species have displayed high variation in breeding success since the 1980s, largely due to changes in the availability of Lesser Sandeels Ammodytes marinus, their main prey. During this time, Arctic Skuas Stercorarius par[...]
Article
Craig T. Symes, Auteur ;
Andrew E. McKechnie, Auteur ;
Susan W. Nicolson, Auteur ;
Stephan M. Woodborne, Auteur
The winter-flowering succulent Aloe marlothii provides nectar for many opportunistic avian nectarivores in southern African savannas. We assessed the importance of A. marlothii nectar sugar for opportunistic nectarivores by analysing temporal ch[...]
Article
Gary R. Bortolotti, Auteur ;
Marten J. Stoffel, Auteur ;
Ismael Galvan, Auteur
For a comprehensive understanding of the evolution of animal signals, it is necessary to understand how the performance of visual displays is maximized to get the most possible attention from receivers. We assessed whether the white plumage of S[...]
