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Documents disponibles écrits par cet auteur (10)
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Article
Matthew Stevens, Auteur ; Campbell Murn, Auteur ; Richard Hennessey, AuteurCapsule: Distance sampling identified an increase in estimated population size of Common Buzzards Buteo buteo in central southern England between 2011 and 2016 of more than 50%. The rate of population growth slowed in later years.Aims: To assess[...]
Article
Campbell Murn, Auteur ; Uzma Saeed, Auteur ; Uzma Khan, Auteur ; Shahid Iqbal, AuteurThe Critically Endangered Oriental White-backed Vulture Gyps bengalensis has declined across most of its range by over 95% since the mid-1990s. The primary cause of the decline and an ongoing threat is the ingestion by vultures of livestock carc[...]
Article
Campbell Murn, AuteurCapsule Individual White-headed Vultures can be reliably identified by the pattern in their median wing coverts. Aims To highlight the distinctiveness of the median wing covert pattern in White-headed Vultures and demonstrate the reliably high i[...]
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Campbell Murn, AuteurCapsule Individual White-headed Vultures can be reliably identified by the pattern in their median wing coverts. Aims To highlight the distinctiveness of the median wing covert pattern in White-headed Vultures and demonstrate the reliably high i[...]
Article
Campbell Murn, Auteur ; Mark D. Anderson, AuteurChanging patterns in land use in relation to the breeding distribution and foraging behaviour of the African White-backed Vulture Gyps africanus were investigated around Kimberley, South Africa. Recent land-use trends indicate a significant incr[...]
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Campbell Murn, Auteur ; André Botha, AuteurBreeding population estimates for three vulture species in Kruger National Park (KNP), South Africa, were made in 2013 using data from aerial censuses and a plotless density estimator (PDE). PDEs are distance-based methods used to assess sparse [...]
Article
Campbell Murn, Auteur ; Graham J. Holloway, AuteurInformation on the breeding biology of the White-headed Vulture Trigonoceps occipitalis is limited and published data are few. Within the Kruger National Park in north-east South Africa there is a regionally important population of about 60 Whit[...]
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Campbell Murn, Auteur ; Leigh Combrink, Auteur ; G. Scott Ronaldson, Auteur ; Charles Thompson, Auteur ; André Botha, AuteurDans Ostrich (84(1) 2013)Vultures are globally threatened, yet reliable population data on these birds are few, thus measuring their response to change is difficult. Kruger National Park (KNP) in South Africa is an important stronghold for many avian species, particular[...]
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, AuteurHooded 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
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, AuteurHooded 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 ([...]
