| Titre : | Ostrich 88(2) - August 31, 2017 |
| Type de document : | Bulletin |
| Paru le : | 00/00/0000 |
Dépouillements
Article
Sonja C. Krüger, Auteur ;
Arjun Amar, Auteur
Recent research has shown that anthropogenic influences are driving the abandonment of breeding territories in the declining southern African Bearded Vulture Gypaetus barbatus meridionalis population. Survival rates appear to be low (86% for adu[...]
Article
Wim C. Mullié, Auteur ;
Francois-Xavier Couzi, Auteur ;
Moussa Sega Diop, Auteur ;
Bram Piot, Auteur ;
Theo Peters, Auteur ;
Pierre A. Reynaud, Auteur ;
Jean-Marc Thiollay, Auteur
As in many West African cities, in Dakar Hooded Vultures Necrosyrtes monachus have always been characteristic urban scavengers. The recent decline of Hooded Vultures in other parts of Africa, mainly eastern Africa, has been the reason in 2015 fo[...]
Article
Machawe I. Maphalala, Auteur ;
Ara Monadjem, Auteur
Persistent vulture declines across Africa are a cause for concern as the number of species threatened with extinction increases. The White-backed Vulture Gyps africanus was, until recently, considered abundant but has been declining rapidly in r[...]
Article
Camilo Carneiro, Auteur ;
Mohamed Henriques, Auteur ;
Castro Barbosa, Auteur ;
Quintino Tchantchalam, Auteur ;
Aissa Regalla, Auteur ;
Ana R. Patrício, Auteur ;
Paulo Catry, Auteur
Populations of many vulture species have undergone substantial declines. In Africa, 82% are threatened and although research on vultures has increased, the biology and ecology of several species is still poorly known. The Palm-nut Vulture Gypohi[...]
Article
Nobuhle T. Mabhikwa, Auteur ;
Margaret T. Hirschauer, Auteur ;
Kerri Wolter, Auteur
The plumage of young Cape Vultures Gyps coprotheres is streaked to varying degrees on the breast, ruff and upper wing coverts. Observations of breast plumage (individual feather streak coverage and overall streaking intensity) were made on Cape [...]
Article
Dane M. Paijmans, Auteur ;
Sarah Catto, Auteur ;
H. Dieter Oschadleus, Auteur
Longevity and displacement records aid in the understanding of animal senescence and the possible range of a species. Within wild populations this information is infrequent with most longevity reports being based on captive individuals and displ[...]
Article
Mohamed Henriques, Auteur ;
Miguel Lecoq, Auteur ;
Hamilton Monteiro, Auteur ;
Aissa Regalla, Auteur ;
José P. Granadeiro, Auteur ;
Paulo Catry, Auteur
Several studies have reported marked declines in populations of birds of prey across the African continent, including West Africa. However, there are still regions of which virtually nothing is known, as is the case for Guinea-Bissau. Because bi[...]
Article
Jean-Marc Thiollay, Auteur
Article
Christopher GR Bowden, Auteur
There have been few faster, more dramatic and wide-scale species declines than those of South Asian vulture populations since the 1990s. This article describes the background to this problem, caused mainly by the veterinary drug diclofenac, and [...]
Article
Lindy J. Thompson, Auteur ;
John P. Davies, Auteur ;
Keith L. Bildstein, Auteur ;
Colleen T. Downs, Auteur
Relatively little is documented about nest material theft in vultures. We used camera traps to monitor Hooded Vulture Necrosyrtes monachus nests for a year. We report camera trap photographs of a starling Lamprotornis sp. removing what appeared [...]
Article
Jack B. Thorley, Auteur ;
Tim Clutton-Brock, Auteur
Vulture populations are experiencing rapid declines across the globe. While the declines have been most precipitous in Asia, recent reports suggest African populations are likewise imminently threatened. As the factors underlying these general p[...]
Article
Margaret T. Hirschauer, Auteur ;
Kerri Wolter, Auteur
The Cape Vulture Gyps coprotheres is an Endangered colonial cliff-nesting species that is typically cited as monogamous. Observations of wild Cape Vulture colonies note extra-pair breeding activities but homosexual activity has never been confir[...]
Article
Lindy J. Thompson, Auteur ;
John P. Davies, Auteur ;
Maja Gudehus, Auteur ;
André J. Botha, Auteur ;
Keith L. Bildstein, Auteur ;
Campbell Murn, Auteur ;
Colleen T. Downs, Auteur
Hooded Vultures Necrosyrtes monachus are critically endangered but little is known of their year-round use of nests or whether other species usurp Hooded Vulture nest sites. We investigated visitation rates by Hooded Vultures and other species ([...]
Article
Andrea Santangeli, Auteur ;
Volen Arkumarev, Auteur ;
Liz Komen, Auteur ;
Peter Bridgeford, Auteur ;
Holger Kolberg, Auteur
Across Africa, the illegal use of poison is triggering a continent-wide scavenger crisis, with vultures suffering the most severe negative consequences. Vultures may die as indirect victims of the conflict between livestock farmers and predators[...]
Article
Lindy J. Thompson, Auteur ;
John P. Davies, Auteur ;
Maja Gudehus, Auteur ;
André J. Botha, Auteur ;
Keith L. Bildstein, Auteur ;
Campbell Murn, Auteur ;
Colleen T. Downs, Auteur
Hooded Vultures Necrosyrtes monachus are critically endangered but little is known of their year-round use of nests or whether other species usurp Hooded Vulture nest sites. We investigated visitation rates by Hooded Vultures and other species ([...]
Article
Andrea Santangeli, Auteur ;
Volen Arkumarev, Auteur ;
Liz Komen, Auteur ;
Peter Bridgeford, Auteur ;
Holger Kolberg, Auteur
Across Africa, the illegal use of poison is triggering a continent-wide scavenger crisis, with vultures suffering the most severe negative consequences. Vultures may die as indirect victims of the conflict between livestock farmers and predators[...]
Article
Christopher G. R. Bowden, Auteur
There have been few faster, more dramatic and wide-scale species declines than those of South Asian vulture populations since the 1990s. This article describes the background to this problem, caused mainly by the veterinary drug diclofenac, and [...]
Article
Camilo Carneiro, Auteur ;
Mohamed Henriques, Auteur ;
Castro Barbosa, Auteur ;
Quintino Tchantchalam, Auteur ;
Aissa Regalla, Auteur ;
Ana R. Patrício, Auteur ;
Paulo Catry, Auteur
Populations of many vulture species have undergone substantial declines. In Africa, 82% are threatened and although research on vultures has increased, the biology and ecology of several species is still poorly known. The Palm-nut Vulture Gypohi[...]
