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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
Roy King, Auteur ; Anthony D. Fox, AuteurCapsule 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, AuteurCapsule 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
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
Anthony D. Fox, Auteur ; Roy King, AuteurWe assessed the contribution of endogenous fat stores to meeting energetic needs during the flightless moult period in Pochard and Tufted Duck by regressing mass on the progression of wing moult, as measured by primary length. Pochard lost betwe[...]
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
Anthony D. Fox, Auteur ; Roy King, Auteur ; Myrfyn Owen, AuteurCaptured free-living male mallard Anas platyrhynchos at Abberton in southern Britain showed peak mass gain immediately prior to simultaneous remex moult. Individuals of both sexes were heavier before shedding wing feathers than when flightless c[...]
