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Article
S. Wanless, Auteur ; M. Frederiksen, Auteur ; M. P. Harris, Auteur ; S. N. Freeman, AuteurCapsule 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[...]
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Article
M. P. Harris, Auteur ; S. Wanless, Auteur ; A. Webb, AuteurBody masses of Common Guillemots Uria aalge in southeast Scotland showed a pronounced annual cycle with birds being consistently heavier during the moult and over the winter. On average, adults were significantly heavier than immatures and males[...]
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H. Kokko, Auteur ; M. P. Harris, Auteur ; S. Wanless, Auteur1. The hypothesis of site-dependent population regulation predicts that birds utilize available nesting sites in a pre-emptive (ideal despotic) manner, leading to density dependence in heterogeneous habitats as poorer sites are used at higher po[...]
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S. Lewis, Auteur ; T. N. Sherratt, Auteur ; K. C. Hamer, Auteur ; M. P. Harris, Auteur ; S. Wanless, AuteurThe diet of Northern Gannets Morus bassanus during chick rearing was determined at two colonies in the UK and Ireland that differed markedly in size (the Bass Rock with c. 40 000 breeding pairs, and Great Sallee with 2000 breeding pairs). Gannet[...]
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S. K. Finney, Auteur ; S. Wanless, Auteur ; M. P. Harris, AuteurA detailed investigation of the effects of weather conditions on the feeding behaviour of a pursuit diving seabird, the Common Guillemot Uria aalge, was carried out during the chick-rearing period at a colony in southeast Scotland in 1997. There[...]
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M. Frederiksen, Auteur ; M. Edwards, Auteur ; R. Mavor, Auteur ; M. Harris, Auteur ; S. Wanless, Auteur
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K. C. Hamer, Auteur ; E. M. Humphreys, Auteur ; M. C. Magalhaes, Auteur ; S. Garthe, Auteur ; J. Hennicke, Auteur ; G. Peters, Auteur ; D. Gremillet, Auteur ; H. Skov, Auteur ; S. Wanless, AuteurMovement patterns of predators should allow them to detect and respond to prey patches at different spatial scales, particularly through the adoption of area-restricted search (ARS) behaviour. Here we use fine-scale movement and activity data co[...]
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S. Wanless, Auteur ; D. Gremillet, Auteur ; M. P. Harris, AuteurWe combined radiotelemetry techniques with an automatic nest balance system to obtain detailed, concurrent data on foraging activity, prey consumption and foraging performance in four pairs of Shags Phalacrocorax aristotelis during chick rearing[...]
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L. Crespin, Auteur ; M. P. Harris, Auteur ; Jean-Dominique Lebreton, Auteur ; S. Wanless, AuteurAlthough there is general consensus about the existence of senescence in vertebrates, empirical evidence of senescence in demographic parameters in wild populations is limited. Data on breeding success and survival of breeding common guillemots [...]
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J. Bull, Auteur ; S. Wanless, Auteur ; D. A. Elston, Auteur ; F. Daunt, Auteur ; S. Lewis, Auteur ; M. P. Harris, AuteurThe Black-legged Kittiwake Rissa tridactyla is a small gull that is widely distributed in the North Atlantic and Pacific. During the breeding season it feeds mainly on fish and, in the North Sea, the Lesser Sandeel Ammodytes marinus typically fo[...]
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F. Daunt, Auteur ; P. Monaghan, Auteur ; S. Wanless, Auteur ; M. P. Harris, AuteurDans Ardea (89(3) 2001)While age related improvements in breeding success have been reported in many avian species, the underlying mechanisms are not well understood. Ectoparasite load can have a significant deleterious effect on many aspects of host fitness. If young[...]
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L. Crespin, Auteur ; M. P. Harris, Auteur ; Jean-Dominique Lebreton, Auteur ; M. Frederiksen, Auteur ; S. Wanless, Auteur1. A novel capture-mark-recapture (CMR) method was used to build a multistate model of recruitment by young birds to a breeding population of common guillemots Uria aalge on the Isle of May, Scotland. Recruitment of a total of 2757 individually [...]
Article
L. J. Wilson, Auteur ; F. Daunt, Auteur ; S. Wanless, AuteurThe Common Guillemot Uria aalge is one of the most abundant seabird species in the North Atlantic. The diet delivered to the chicks by breeding adults is well known, since the food is carried in the bill and readily observed at colonies. Much le[...]
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D. Gremillet, Auteur ; C. Chauvin, Auteur ; R. P. Wilson, Auteur ; Y. Le Maho, Auteur ; S. Wanless, AuteurThe great cormorant Phalacrocorax carbo is thought to have a wettable plumage, providing low body insulation during foraging. Great cormorants should thus be constrained by water temperatures, and show high energy requirements. Surprisingly, thi[...]
