Détail de l'auteur
Documents disponibles écrits par cet auteur (12)
Ajouter le résultat dans votre panier Affiner la recherche
Article
Kate J. H. England, Auteur ; Colin Jackson, Auteur ; Philip A. R. Hockey, AuteurA methodology for rapidly assessing the vulnerability of waterbirds to disturbance was tested at Sabaki estuary, Kenya. Three variables were employed to measure the responses of 15 species: (1) bird density, (2) minimum distance of birds from a [...]
Article
Tendai Musvuugwa, Auteur ; Philip A. R. Hockey, AuteurClutch sizes of gamebirds decrease in a hyperbolic fashion towards the equator, but their clutch investment (total clutch mass as a proportion of female body weight) does not vary with latitude, regardless of whether body mass and phylogeny are [...]
Article
Philip A. R. Hockey, Auteur ; Guy F. Midgley, AuteurEvidence from the Northern Hemisphere and simple theoretical models both predict that climate change could force southern African birds to undergo poleward range shifts. We document the chronology and habitat use of 18 regionally indigenous bird[...]
Article
Ian T. Little, Auteur ; Philip A. R. Hockey, Auteur ; Raymond Jansen, AuteurIn this study, we investigated the responses of two faunal groups, birds and arthropods, to varying degrees of disturbance caused by fire and grazing in South Africa, eight study sites of varying fire frequency and stocking density were studied [...]
Article
Gwyneth Wilson, Auteur ; Philip A. R. Hockey, AuteurRange occupancy of the cooperatively breeding Southern Ground-Hornbill Bucorvus leadbeateri in South Africa has decreased by 65% in the last three generations and the effective management of the remaining populations is hampered by a lack of fun[...]
Article
Odette E. Curtis, Auteur ; Philip A. R. Hockey, Auteur ; Ann Koeslag, AuteurWe studied a population of Black Sparrowhawks Accipiter melanoleucus that has recently colonized the Cape Peninsula, South Africa. Black Sparrowhawks are winter breeders: over most of their range winters are dry, but the Cape Peninsula has a Med[...]
Article
Nicola C. Okes, Auteur ; Philip A. R. Hockey, Auteur ; Lorien Pichegru, Auteur ; Carl D. van der Lingen, Auteur ; Robert J. M. Crawford, Auteur ; David Grémillet, AuteurIn the southern Benguela upwelling ecosystem off the west coast of South Africa, seabird populations are decreasing dramatically because of reduced availability of pelagic fish. We tested the hypothesis that the west coast fishing industry is co[...]
Article
Philip A. R. Hockey, Auteur ; Ross M. Wanless, Auteur ; Rainer von Brandis, AuteurSince 1600, a disproportionate number of avian extinctions have occurred among flightless and island-dwelling species. Some of these happened very rapidly, implying that such populations had low resilience to perturbation. In managing insular po[...]
Article
Inbreeding avoidance mechanisms: dispersal dynamics in cooperatively breeding southern pied babblers
Martha J. Nelson-Flower, Auteur ; Philip A. R. Hockey, Auteur ; Colleen O'Ryan, Auteur ; Amanda R. Ridley, Auteur1. Breeding with kin can reduce individual fitness through the deleterious effects of inbreeding depression. Inbreeding avoidance mechanisms are expected to have developed in most species, and especially in cooperatively breeding species where i[...]
Article
Mduduzi Ndlovu, Auteur ; Graeme S. Cumming, Auteur ; Philip A. R. Hockey, Auteur ; Leo W. Bruinzeel, AuteurPhenotypic flexibility during moult has never been explored in austral nomadic ducks. We investigated whether the body condition, organ (pectoral muscle, gizzard, liver and heart) mass and flight-feather growth Egyptian geese Alopochen aegyptiac[...]
Article
Tiwonge I. Mzumara, Auteur ; Philip A. R. Hockey, Auteur ; Amanda R. Ridley, AuteurThe forest-associated Yellow-throated Apalis Apalis flavigularis is the only bird endemic to Malawi. The species is confined to three mountain massifs in the south of the country and is classified as globally 'Endangered'. This study re-evaluate[...]
