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Auteur D. P. Whitfield |
Documents disponibles écrits par cet auteur (6)
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Article
S. R. Hoy, Auteur ; S. J. Petty, Auteur ; A. Millon, Auteur ; D. P. Whitfield, Auteur ; M. Marquiss, Auteur ; D. I. K. Anderson, Auteur ; M. Davison, Auteur ; X. Lambin, AuteurA better understanding of the mechanisms driving superpredation, the killing of smaller mesopredators by larger apex predators, is important because of the crucial role superpredation can play in structuring communities and because it often invo[...]![]()
Article
D. P. Whitfield, Auteur ; Robin Reid, Auteur ; Paul F. Haworth, Auteur ; Mike Madders, Auteur ; Mick Marquiss, Auteur ; Ruth Tingay, Auteur ; Alan H. Fielding, AuteurAmongst raptor species, individuals with specialized diets are commonly observed to have higher reproductive output than those with general diets. A suggested cause is that foraging efficiency benefits accrue to diet specialists. This diet speci[...]![]()
Article
S. Holt, Auteur ; D. P. Whitfield, Auteur ; K. Duncan, Auteur ; S. Rae, Auteur ; R. D. Smith, AuteurBody mass loss is frequently observed in breeding birds: whether this is an adaptive response to a change in the relative value of body stores and locomotion performance or a consequence of energetic constraint is still in debate. The male alone[...]![]()
Article
D. P. Whitfield, Auteur ; W. Cresswell, Auteur ; N. P. Ashmole, Auteur ; N. A. Clark, Auteur ; A. D. Evans, AuteurDuring a 10-year study at two adjacent Scottish sites we tested the null hypotheses that Sparrowhawks Accipiter sisus selected overwintering Redshanks Tringa totanus independently of body size and condition, There was no significant difference i[...]![]()
Article
D. P. Whitfield, AuteurOver 11 winters I examined the interactions between sparrowhawk Accipiter nisus attack behaviour, the gregariousness of redshanks Tringa totanus and local geography to test hypotheses that suggest birds should flock to reduce their risk of preda[...]



