| Titre : | Bird Study 53 - JUL 2006 |
| Type de document : | Bulletin |
| Paru le : | 01/07/2006 |
Dépouillements
Article
Daniel Haag-Wackernagell, Auteur ;
Philipp Heeb, Auteur ;
Andreas Leiss, Auteur
Capsule We suggest the existence of colour-based selection processes on juvenile Feral Pigeons in an urban environment. Aims To investigate whether the colour or pattern of a fledgling affects its probability of survival to adulthood. Methods We[...]
Article
Paul F. Haworth, Auteur ;
Michael J. McGrady, Auteur ;
D. Philip Whitfield, Auteur ;
Alan H. Fielding, Auteur ;
David R. A. McLeod, Auteur
Capsule Home-range of resident pairs of Golden Eagle was usually smaller during a successful breeding season than during winter and during an unsuccessful breeding season. Aims To examine how Golden Eagles use space around their nests with respe[...]
Article
Darren Moorcroft, Auteur ;
Jeremy D. Wilson, Auteur ;
Richard B. Bradbury, Auteur
Capsule Between the 1960s and 1990s, nestling diet has changed in ways consistent with the impact of agricultural intensification on the availability of seed sources. Aims To compare the diet of nestling Linnets before (1962-64) and after (1996-[...]
Article
Álvaro Soutullo, Auteur ;
Vicente Urios, Auteur ;
Miguel Ferrer, Auteur ;
Santiago G. Penarrubia, Auteur
Capsule The area explored increased throughout the year and tended to be much larger for females than males. Aims To explore how the process of juvenile dispersal unfolds spatially and temporally, and compare the size of the areas explored by th[...]
Article
Katherine M. Kelleher, Auteur ;
John O'Halloran, Auteur
Capsule Breeding characteristics were explained by agricultural intensification, climate, latitude and insular syndrome. Aims To describe the timing of breeding, clutch size and number of nestlings hatched and fledged, assess nesting success and[...]
Article
Timothy H. Parker, Auteur ;
Heidi Tillin, Auteur
Capsule Blue Tits song their dawn song in trees that provided greater concealment. Aims To determine if dawn singing Blue Tits select trees that increase their concealment. Methods We compared the timing of leaf growth initiation in Blue Tit son[...]
Article
Stefan Thyen, Auteur ;
Peter H. Becker, Auteur
Capsule Annual breeding success was relatively constant and is shown to be related to clutch size and growth rate and to be positively affected by rain during egg-laying and advanced chick-rearing phase. Aims To provide the first long-term data [...]
Article
Michael P. Harris, Auteur ;
Martin Heubeck, Auteur ;
Deryk N. Shaw, Auteur ;
J. David Okill, Auteur
Capsule Changes in return date coincided with marked changes in population size that probably resulted in fluctuating competition for nest-sites. Aims To document the changes in return dates over a 44-year period and to identify the factors asso[...]
Article
Ruben Liminana, Auteur ;
Martin Surroca, Auteur ;
Stephan Miralles, Auteur ;
Vicente Urios, Auteur ;
Juan Jimenez, Auteur
Capsule Reproductive output in a natural habitat was higher than in birds breeding in cereal crops, highlighting the importance of natural habitats for the species. Aims To evaluate breeding in a natural habitat in inland Castellon province, Spa[...]
Article
Ziemowit Kosinski, Auteur ;
Pawel Ksit, Auteur
Capsule Nest success rate and survival probabilities fledgling number are higher in the smaller species. Aims To examine the relevant reproductive features of individuals are the same but clutch size and of the two co-occurring congeneric woodpe[...]
Article
James W. Pearce-Higgins, Auteur ;
Murray C. Grant, Auteur
Capsule Variations in the composition, structure and heterogeneity of moorland vegetation are shown to affect the abundance of eight of nine moorland bird species, with implications for grazing management. Aims To determine how variation in vege[...]
Article
Mark W. Wilson, Auteur ;
Josephine Pithon, Auteur ;
Tom Gittings, Auteur ;
Tom C. Kelly, Auteur ;
Paul S. Giller, Auteur ;
John O'Halloran, Auteur
Capsule Bird species assemblages are strongly dependent on growth stage and forest structure, but do not appear to be greatly affected by tree species composition. Aims To investigate changes in bird species composition of plantation forests in [...]
Article
Philip W. Atkinson, Auteur ;
Richard A. Fuller, Auteur ;
Simon Gillings, Auteur ;
Juliet A. Vickery, Auteur
Capsule Perimeter counts underestimate the number of birds using agricultural fields. Aims To determine the degree to which farmland birds may be undercounted on field surveys and the factors influencing this. Methods In a study of 96 fields, bi[...]
Article
A. D. Fox, Auteur
Capsule In east Jutland, Denmark, the invasion included individuals of a small-sized local race P p. coccinea, as well as numbers of two larger forms, which consistently gave either 'normal' or 'trumpeting' calls on release and whose origins are[...]
Article
Luis Mariano Gonzalez, Auteur ;
Javier Oria, Auteur ;
Antoni Margalida, Auteur ;
Roberto Sanchez, Auteur ;
Luis Prada, Auteur ;
Javier Caldera, Auteur ;
Antonio Aranda, Auteur ;
Jose Ignacio Molina, Auteur
Capsule Dispersive capacity appears sufficient to establish natural re-occupation of the former range. Aims To document data on effective natal dispersal and age of maturity in the increasing, but fragmented, Spanish Imperial Eagle population. M[...]
Article
Simon Gillings, Auteur ;
Graham E. Austin, Auteur ;
Robert J. Fuller, Auteur ;
William J. Sutherland, Auteur
Capsule The winter distribution of Golden Plover and Lapwing has shifted east since the mid-1980s, perhaps in response to climate change. Aims To combine analyses of winter trends on wetlands and flocks on farmland to assess the current status o[...]
Article
Mark O'Brien, Auteur ;
Rhys E. Green, Auteur ;
Jeremy Wilson, Auteur
Capsule Singing male Corncrakes increased more than two-fold over the study period. Aim To provide updated counts of the number and distribution of singing male Corncrakes in Britain and describe the implementation of schemes in which land manag[...]
Article
Andrew N. Hoodless, Auteur ;
John G. Inglis, Auteur ;
David Baines, Auteur
Capsule Snipe numbers are assessed most accurately at dusk and at low wind speeds. Aims To identify factors affecting the variability and efficiency of breeding Snipe surveys and to assess the validity of current survey methods for estimating br[...]
Article
Tomas G. Gunnarsson, Auteur ;
Jennifer A. Gill, Auteur ;
Sara L. Goodacre, Auteur ;
Guillaume Gelinaud, Auteur ;
Philip W. Atkinson, Auteur ;
Godfrey M. Hewitt, Auteur ;
Peter M. Potts, Auteur ;
William J. Sutherland, Auteur
Capsule Biometrics and plumage characteristics can both be used to reliably sex Black-tailed Godwits. Aims To develop methods of sexing Black-tailed Godwits and to validate their relative accuracy. Methods A sample of 84 Black-tailed Godwits was[...]
Article
Sarah F. Jackson, Auteur ;
Graham E. Austin, Auteur ;
Michael J. S. Armitage, Auteur
Capsule Population size estimates of widely dispersed waterbird species in Great Britain were improved using a stratified random sample of habitats in addition to standard counts of known wetlands. Aims To improve the estimation of national popu[...]
Article
Gavin J. Fennessy, Auteur ;
Thomas C. Kelly, Auteur
Capsule Territory density varied between habitat types and displayed a clear relationship with certain macro- and micro-habitat characteristics. Aims To investigate the role of habitat and structural hedgerow components on breeding densities of [...]
Article
Chris M. Hewson, Auteur ;
Robert J. Fuller, Auteur
Article
Cyril Eraud, Auteur ;
Joelle Lallemand, Auteur ;
Hervé Lormee, Auteur
Capsule Earlier broods tend to be more male biased than later broods.
Article
Luigi Marchesi, Auteur ;
Fabrizio Sergio, Auteur ;
Paolo Pedrini, Auteur
Capsule In the areas studied, Tawny Owls showed extreme flexibility and opportunism, occupying most available vegetation types and elevations below the tree-line. Aims To assess habitat relationships for the species so as to forecast the potenti[...]
Article
E. Boros, Auteur ;
S. Andrikovics, Auteur ;
B. Kiss, Auteur ;
L. Forro, Auteur
Article
G. M. Buchanan, Auteur ;
J. W. Pearce-higgins, Auteur ;
M. C. Grant, Auteur
Article
S. Wanless, Auteur ;
M. Frederiksen, Auteur ;
M. P. Harris, Auteur ;
S. N. Freeman, Auteur
Capsule The mean annual survival of adult Gannets was 92% and about 30% of young survived to an age of four years. Aim To obtain the first estimates of the survival of British and Irish Gannets from ringing recoveries. Methods Ringing and recove[...]
Article
R. H. W. Langston, Auteur ;
T. Smith, Auteur ;
A. F. Brown, Auteur ;
R. D. Gregory, Auteur
Capsule The first comprehensive estimate of breeding Twite in the UK indicates that there were approximately 10 000 pairs in 1999. Aims To provide a baseline population estimate of breeding Twite in the UK. Methods In Scotland and England, three[...]
Article
B. E. Arroyo, Auteur ;
J. T. Garcia, Auteur
Capsule Diet diversity was positively related to nest failure in Montagu's Harriers. Aims To evaluate whether breeding density, age structure and breeding success of Montagu's Harriers were related to variations in diet composition. Methods Bree[...]
Article
M. P. Dias, Auteur ;
J. P. Granadeiro, Auteur ;
R. C. Martins, Auteur ;
J. M. Palmeirim, Auteur
Capsule Low tide counts may give inaccurate estimates of habitat use; combining low and mid-tide counts yields better estimates. Aims To evaluate whether low tide bird counts provide a good estimate of habitat use of intertidal areas with differ[...]
Article
Chris Stoate, Auteur ;
John Szczur, Auteur
Article
Factors affecting breeding distribution of Storm-petrels Hydrobates pelagicus in Orkney and Shetland
A. De Leon, Auteur ;
E. Minguez, Auteur ;
P. Harvey, Auteur ;
E. Meek, Auteur ;
J. E. Crane, Auteur ;
R. W. Furness, Auteur
Capsule The main factors are past and present human activities, especially the introduction of rats to islands. Aims To assess factors that influence breeding distribution and abundance of Storm-petrel. Methods We used a database for 142 islands[...]
Article
J. Kahlert, Auteur
Capsule Body mass loss was mainly affected by daily travel distance between roost site and feeding patches. Aims To determine the effects on the rate of body mass loss caused by differences in daily travel distance, frequency of disturbance even[...]
Article
D. Gruar, Auteur ;
D. Barritt, Auteur ;
W. J. Peach, Auteur
Capsule Oilseed Rape was the preferred breeding season habitat for Reed Buntings on arable farmland and reduced this species' dependence on wet features. Aims To identify preferred breeding season habitats for Reed Buntings on arable farmland an[...]
Article
E. Arriero, Auteur ;
J. J. Sanz, Auteur ;
M. Romero-Pujante, Auteur
Capsule Effects operate during laying and incubation and with less success in breeding territories characterized by a young and immature vegetation structure. Aims To explore relationships between habitat characteristics at the breeding territor[...]
Article
N. Wilkinson, Auteur
Capsule Suburban House Sparrows prefer gardens with native bushes but show no detectable response to garden insecticide use. Aims To identify the factors that influence House Sparrow distribution among suburban gardens. Methods Bicycle transects[...]
Article
Gavin J. Fennessy, Auteur ;
Thomas C. Kelly, Auteur
Capsule Territory density varied between habitat types and displayed a clear relationship with certain macro- and micro-habitat characteristics. Aims To investigate the role of habitat and structural hedgerow components on breeding densities of [...]
Article
Chris M. Hewson, Auteur ;
Robert J. Fuller, Auteur
Article
Cyril Eraud, Auteur ;
Joelle Lallemand, Auteur ;
Hervé Lormee, Auteur
Capsule Earlier broods tend to be more male biased than later broods.
Article
Daniel Haag-Wackernagell, Auteur ;
Philipp Heeb, Auteur ;
Andreas Leiss, Auteur
Capsule We suggest the existence of colour-based selection processes on juvenile Feral Pigeons in an urban environment. Aims To investigate whether the colour or pattern of a fledgling affects its probability of survival to adulthood. Methods We[...]
Article
Philip W. Atkinson, Auteur ;
Richard A. Fuller, Auteur ;
Simon Gillings, Auteur ;
Juliet A. Vickery, Auteur
Capsule Perimeter counts underestimate the number of birds using agricultural fields. Aims To determine the degree to which farmland birds may be undercounted on field surveys and the factors influencing this. Methods In a study of 96 fields, bi[...]
