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Assessing the accuracy of plotless density estimators using census counts to refine population estimates of the vultures of Kruger National Park
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Campbell Murn --- Hawk Conservancy Trust, UK André Botha --- Birds of Prey Programme, South AfricaBreeding 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 populations unsuitable for... -
The creation of the SAVE consortium – Saving Asia’s Vultures from Extinction: a possible model for Africa?
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Christopher GR Bowden --- Globally Threatened Species Recovery Unit, Royal Society for the Protection of Birds, UKThere 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 the establishment and... -
Densities and population sizes of raptors in Uganda’s conservation areas
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Derek Pomeroy --- Department of Zoology, Uganda Micheal Kibuule --- Department of Zoology, Uganda Dianah Nalwanga --- NatureUganda, Uganda George Kaphu --- Uganda Wildlife Authority, Uganda Michael Opige --- NatureUganda, Uganda Phil Shaw --- School of Biology, UKProjected increases in Africa's human population over the next 40 years point to further, large-scale conversion of natural habitats into farmland, with far-reaching consequences for raptor species, some of which are now largely restricted to protected areas (PAs). To assess... -
Confirmed cases of Rüppell’s Vulture Gyps rueppelli breeding in Senegal: advocating systematic sampling to reassess the conservation status of the species in West Africa
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Antonio-Román Muñoz --- Universidad de Málaga, Spain Juan Ramírez --- Universidad de Málaga, Spain Marina Guerrero --- Universidad de Málaga, Spain Francisco María Zufiaur --- , SpainVulture populations are declining across Africa and the conservation status of Rüppell’s Vulture Gyps rueppelli has changed from Near Threatened in 2007 to Critically Endangered in 2015. Its global population was estimated at 30 000 individuals in the early 1990s... -
Biases in vulture conservation literature in Africa
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Joseph K Daniels --- University of Cape Coast, Ghana Samuel E Tamekloe --- University of Cape Coast, Ghana Kweku A Monney --- University of Cape Coast, Ghana Justus P Deikumah --- University of Cape Coast, GhanaSince the turn of the century, most vulture species have been experiencing dramatic population declines worldwide, prompting extensive research and conservation initiatives. We investigated research efforts on African vultures by searching for publications from the year 2000 to the present...