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Article
Chas Holt, Auteur ; Kim Wallis, Auteur ; Maurice Durham, Auteur ; Graham Ekins, Auteur ; Richard Hearn, Auteur ; Roy King, AuteurAbberton Reservoir, in Essex, has been a key site in British ornithology for many decades owing to its internationally important non-breeding waterbird populations and a rich history of duck ringing. This paper describes the status of key wildfo[...]
Article
Benjamin Folliot, Auteur ; Guillaume Souchay, Auteur ; Jocelyn Champagnon, Auteur ; Matthieu Guillemain, Auteur ; Maurice Durham, Auteur ; Richard Hearn, Auteur ; Josef Hofer, Auteur ; Jacques Laesser, Auteur ; Christophe Sorin, Auteur ; Alain Caizergues, AuteurIn western Europe, common pochard populations have experienced a sharp decline over the last two decades, together with an increasing proportion of males. Both of these changes were suggested to result from decreasing survival of nesting females[...]
Article
Qing Chang, Auteur ; Guy Q. A. Anderson, Auteur ; Kane Brides, Auteur ; Jacquie A. Clark, Auteur ; Nigel A. Clark, Auteur ; Richard Hearn, Auteur ; Katherine Leung, Auteur ; David S. Melville, Auteur ; Ewan Weston, Auteur ; Jenny Weston, Auteur ; Rhys E. Green, AuteurThe Critically Endangered Spoon-billed Sandpiper Calidris pygmaea breeds in arctic and subarctic Russia and migrates to winter on coastal mudflats in southeast Asia. Its world population is probably about 700 individuals. We report Lincoln-Peter[...]
Article
Teresa Frost, Auteur ; Graham Austin, Auteur ; Richard Hearn, Auteur ; Stephen McAvoy, Auteur ; Anna Robinson, Auteur ; David Stroud, Auteur ; Ian Woodward, Auteur ; Simon Wotton, AuteurThis paper provides updated estimates of population size for wintering waterbirds in Great Britain using recent data and new analytical approaches for some species that use smaller inland waterbodies or the non-estuarine coast. These population [...]
Article
Matthieu Guillemain, Auteur ; Clément Calenge, Auteur ; Jocelyn Champagnon, Auteur ; Richard Hearn, AuteurAccurate flyway delineation is a prerequisite for effective conservation and management of migratory bird populations, yet such limits have so far mostly been set subjectively. We present a statistical method to infer population boundaries from [...]
Article
Matthieu Guillemain, Auteur ; Richard Hearn, AuteurThe geographic range of many migratory bird populations is shifting in response to climate change. Protected areas play a major role in the conservation of many such species, yet these reserves are static so a geographic mismatch between the hab[...]
Guide technique
Jean-Baptiste Mouronval ; Matthieu Guillemain, Auteur ; Richard Hearn, Auteur | [S.l.] : ONCFS | 2017This guide aims to help bird ringers, hunters, and other people interested in waterbirds to sex and age the ten most common freshwater duck species in Europe. Age and sex determination mostly relies on the examination of wing feathers, illustrat[...]
Article
Matthieu Guillemain, Auteur ; Olivier Devineau, Auteur ; Michel Gauthier-Clerc, Auteur ; Richard Hearn, Auteur ; Roy King, Auteur ; Géraldine Simon, Auteur ; Mark Grantham, AuteurAlthough knowledge of ring recovery rate is of crucial importance to establish demographic parameters, such as survival probability, this information is generally unknown for the dabbling ducks. The almost single existing value from the North Am[...]
Article
Matthieu Guillemain, Auteur ; Johan Elmberg, Auteur ; Michel Gauthier-Clerc, Auteur ; Gregoire Massez, Auteur ; Richard Hearn, Auteur ; Jocelyn Champagnon, Auteur ; Géraldine Simon, AuteurAnimal populations are exposed to large-scale anthropogenic impact from e.g. climate change, habitat alteration and supplemental stocking. All of these may affect body condition in wintering dabbling ducks, which in turn may affect an individual[...]
Ouvrage
Andy Musgrove, Auteur ; Mark Pollitt, Auteur ; Colette Hall, Auteur ; Richard Hearn, Auteur ; Steve Holloway, Auteur ; Paul Marshall, Auteur ; James Robinson, Auteur ; Peter Cranswick, Auteur | Slimbridge, Glos. : British Trust for Ornithology : Wildfowl & Wetlands Trust : Royal Society for the Protection of Birds : Joint Nature Conservation Committee | 2001
Article
Stuart Newson, Auteur ; John Marchant, Auteur ; Robin Sellers, Auteur ; Graham Ekins, Auteur ; Richard Hearn, Auteur ; Niall Burton, AuteurFollowing the establishment of a tree-nesting colony of Great Cormorants Phalacrocorax carbo at Abberton Reservoir, Essex, in 1981, the inland breeding population in England has increased considerably. Successful breeding has now occurred at 89 [...]
Article
Matthieu Guillemain, Auteur ; Richard Hearn, Auteur ; Roy King, Auteur ; Michel Gauthier-Clerc, Auteur ; Géraldine Simon, Auteur ; Alain Caizergues, AuteurThe "body size hypothesis" predicts that if individuals of a population migrate different distances from the breeding to the wintering grounds, the distance should be related to the differential ability to cope with adverse conditions, with larg[...]
Article
Carl Mitchell, Auteur ; Richard Hearn, Auteur ; David Stroud, AuteurTwo breeding populations of Grey lag Goose Anser anser are currently recognised in the UK: i) the northwest Scotland (or native) population, which is the remnant of the population that once occurred more widely across Britain; and ii) the re-est[...]
Article
Andy Musgrove, Auteur ; Nicholas Aebischer, Auteur ; Mark Eaton, Auteur ; Richard Hearn, Auteur ; Stuart Newson, Auteur ; David Noble, Auteur ; Matt Parsons, Auteur ; Kate Risely, Auteur ; David Stroud, AuteurPopulation estimates of birds have a wide range of practical conservation uses, as well as being of enduring interest to many birdwatchers. Following previous reports by the Avian Population Estimates Panel, in 1997 and 2006, we present the thir[...]
