| Titre : | Bird Study 59(2) - 2012 |
| Type de document : | Bulletin |
| Paru le : | 01/04/2012 |
Dépouillements
Article
Carolina Bravo, Auteur ;
Carlos Ponce, Auteur ;
Carlos Palacín, Auteur ;
Juan Carlos Alonso, Auteur
Capsule Arthropods are the most important diet component of Great Bustards Otis tarda in the first months of life. Aims To determine the diet composition of young Great Bustards in Spain. Methods The diet was estimated by stomach content analysi[...]
Article
Vicente Garcia-Navas, Auteur ;
Esperanza S. Ferrer, Auteur ;
Juan Jose Sanz, Auteur
Capsule The effect of nestling age (7, 10 and 13 days old) on prey choice by Blue Tits Cyanistes caeruleus seems to be related to time constraints on food selectivity rather than chick gape-size limitations. Aims To study age differences in the [...]
Article
Laura Cardador, Auteur ;
Enric Planas, Auteur ;
Anna Varea, Auteur ;
Santi Mañosa, Auteur
Capsule Diet composition and feeding behaviour of breeding birds differed between areas of high and low agricultural intensification. Aims To analyze diet composition and feeding behaviour of Marsh Harriers Circus aeruginosus in agricultural lan[...]
Article
The size and migratory origins of the population of Hen Harriers Circus cyaneus wintering in England
Andrew D. M. Dobson, Auteur ;
Michele Clarke, Auteur ;
Nils Kjellen, Auteur ;
Roger Clarke, Auteur
Capsule The majority of Hen Harriers Circus cyaneus that spend the winter in England are derived from the British breeding population. Aims To investigate the popular hypothesis that Hen Harriers which over-winter in England are derived principa[...]
Article
Massimiliano Di Vittorio, Auteur ;
Maurizio Sara, Auteur ;
Pascual López-López, Auteur
Capsule For breeding, areas dominated by extensive agricultural and rugged Mediterranean landscapes are preferred; maintenance of habitat heterogeneity and extensive agriculture are key for the conservation of this eagle. Aims To model breeding [...]
Article
Olivier Duriez, Auteur ;
Sophie Herman, Auteur ;
Francois Sarrazin, Auteur
Capsule Young vultures have better access to food resources at supplementary feeding sites where carcasses are fewer and less predictable, and placed further from colonies. Aims To investigate the impact of the management of supplementary feedin[...]
Article
Michela Bose, Auteur ;
Olivier Duriez, Auteur ;
Francois Sarrazin, Auteur
Capsule Young Griffon Vultures Gyps fulvus suffer intense competition from elders at feeding sites and this reduces their intake rate. Aims To explore the costs and benefits of feeding in groups in Griffon Vultures Methods In a French population[...]
Article
Nicholas Per Huffeldt, Auteur ;
Iben Noes Aggerholm, Auteur ;
Nathia Hass Brandtberg, Auteur ;
Jacob Hjorth Jorgensen, Auteur ;
Klaus Dichmann, Auteur ;
Peter Sunde, Auteur
Capsule Recovery distances of Barn Owls ringed as pulli are conditional on ringing date but not on population density. Aims To test whether ring recovery distances (proxy for natal dispersal distances) were conditional on population density and [...]
Article
William R. Meek, Auteur ;
Peter J. Burman, Auteur ;
Tim H. Sparks, Auteur ;
Marek Nowakowski, Auteur ;
Niall J. Burman, Auteur
Capsule Barn Owl pellets can be used to assess population changes in small mammals though with certain important reservations. Aims To conduct a large-scale, long-term analysis of pellets regurgitated by Barn Owls collected from a defined area o[...]
Article
Alex S. Copland, Auteur ;
Olivia Crowe, Auteur ;
Mark W. Wilson, Auteur ;
John O'Halloran, Auteur
Capsule Skylarks breeding in Ireland prefer extensive grassland habitats and almost completely avoid tillage habitats. Aims To describe the distribution and habitat use of breeding Skylarks in Ireland, particularly in lowland agricultural habita[...]
Article
Grzegorz Neubauer, Auteur ;
Piotr Zieliński, Auteur ;
Zbigniew Wojciechowski, Auteur ;
Elzbieta Buszkiewicz, Auteur ;
Joachim Siekiera, Auteur ;
Artur Siekiera, Auteur
Capsule Capture-mark-recapture data can be used to predict departure dates of Barn Swallows Hirundo rustica from summer roosts. Aims To investigate how long Barn Swallows remain at their breeding grounds before migration by estimating departure [...]
Article
Steven R. Ewing, Auteur ;
Mark A. Eaton, Auteur ;
Timothy F. Poole, Auteur ;
Megan Davies, Auteur ;
Susan Haysom, Auteur
Capsule The estimated population size of Capercaillie in Scotland was 1285 individuals (95% CI: 8221882). Aim To produce an updated population estimate for Capercaillie in Scotland using a similar approach to previous surveys, but with refinemen[...]
Article
Nancy Ockendon, Auteur ;
Chris M. Hewson, Auteur ;
Alison Johnston, Auteur ;
Philip W. Atkinson, Auteur
Capsule The bioclimatic zone and habitat type within which birds winter are the most important determinants of population trends. Aims To investigate whether regional factors on wintering grounds, phenological mismatch, or habitat on breeding or[...]
Article
Roy King, Auteur ;
Anthony D. Fox, Auteur
Capsule Female Gadwall Anas strepera and male Wigeon A. penelope lost about 18% of body mass during flightless wing moult at Abberton Reservoir, southeast England - slightly greater than that recorded for other dabbling ducks but less than among[...]
Article
Roy King, Auteur ;
Anthony D. Fox, Auteur
Capsule Female Gadwall Anas strepera and male Wigeon A. penelope lost about 18% of body mass during flightless wing moult at Abberton Reservoir, southeast England - slightly greater than that recorded for other dabbling ducks but less than among[...]
