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Population estimates of three vulture species in Kruger National Park, South Africa
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Campbell Murn --- , UK Leigh Combrink --- , South Africa G Scott Ronaldson --- , South Africa Charles Thompson --- , South Africa André Botha --- , South AfricaVultures 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, particularly vultures. In this... -
Wind farms threaten southern Africa's cliff-nesting vultures
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Ian Rushworth --- Scientific Services, South Africa Sonja Krüger --- Scientific Services, South AfricaWind farms have been shown to cause bird mortality in many studies. Proposals for the development of wind farms in Lesotho, which is core habitat for small and declining populations of the regionally Endangered Bearded Vulture Gypaetus barbatus meridionalis and... -
Breeding biology of the White-headed Vulture Trigonoceps occipitalis in Kruger National Park, South Africa
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Campbell Murn --- Hawk Conservancy Trust, UK Graham J Holloway --- School of Biological Sciences, UKInformation 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 White-headed Vulture pairs, of... -
Significant population of Egyptian Vulture Neophron percnopterus found in Morocco
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Mohamed Amezian --- Department of Biology, Faculty of Sciences, Morocco Rachid El Khamlichi --- Group for Research and Protection of Birds in Morocco (GREPOM/BirdLife Morocco), regional section of Tangier-Tétouan, MoroccoThe Egyptian Vulture Neophron percnopterus population in Morocco has undergone a marked decline since the 1980s to the point of nearing local extinction in the twenty-first century. A field study of some possible sites for Egyptian Vultures was carried out... -
Cape Vulture Gyps coprotheres breeding status in southern Africa: monitoring results from 2010–2014
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Kerri Wolter --- VulPro NPO, South Africa Walter Neser --- VulPro NPO, South Africa Margaret T Hirschauer --- VulPro NPO, South Africa Alvaro Camiña --- ACRENASL Environmental Consultants, SpainMonitoring of eight Cape Vulture Gyps coprotheres breeding colonies in South Africa and Botswana took place between 2010 and 2014 using standardised counting methods. Counts of breeding pairs, nestlings and fledglings were used to calculate breeding success and general population... -
Hooded Vulture Necrosyrtes monachus and African White-backed Vulture Gyps africanus nesting at the Olifants River Private Nature Reserve, Limpopo province, South Africa
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Ara Monadjem --- Department of Biological Sciences, Swaziland Kerri Wolter --- VulPro NPC, South Africa Walter Neser --- VulPro NPC, South Africa Keith Bildstein --- Acopian Center for Conservation Learning, USABasic ecological information is still lacking for many species of African vultures. The Hooded Vulture Necrosyrtes monachus is known as a rare breeding resident in north-eastern South Africa. This study set out to monitor the nests of Hooded Vultures and,... -
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... -
Observations of microtrash ingestion in Cape Vultures in the Eastern Cape, South Africa
Item type: Journal Article • Journal: African Zoology • Authors: Morgan B Pfeiffer --- School of Life Sciences, South Africa Jan A Venter --- School of Natural Resource Management, South Africa Colleen T Downs --- School of Life Sciences, South AfricaIngestion of man-made items by birds can reduce stomach volume and block the digestive track. In southern Africa, microtrash within the regurgitation of Cape Vulture nestlings was last documented in 1983. We present evidence of nestling microtrash ingestion after a... -
Natal philopatry in young Cape Vultures Gyps coprotheres
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Margaret T Hirschauer --- VulPro NPC, South Africa Kerri Wolter --- VulPro NPC, South Africa Walter Neser --- VulPro NPC, South AfricaIn 2010, 14 Cape Vulture Gyps coprotheres chicks were ringed as nestlings on the cliffs at the Skeerpoort Cape Vulture colony in the Magaliesberg mountains, South Africa. Observations made during the 2014 and 2015 breeding colony censuses confirm two individuals... -
Kalahari vulture declines, through the eyes of meerkats
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Jack B Thorley --- Department of Zoology, UK Tim Clutton-Brock --- Department of Zoology, UKVulture 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 population trends are multifaceted and will vary... -
High occurrence of extra-pair partnerships and homosexuality in a captive Cape Vulture Gyps coprotheres colony
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Margaret T Hirschauer --- VulPro NPC, South Africa Kerri Wolter --- VulPro NPC, South AfricaThe 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 confirmed. Observations of breeding behaviours within a... -
Removal (and attempted removal) of material from a Hooded Vulture Necrosyrtes monachus nest by a starling and a Hooded Vulture
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Lindy J Thompson --- School of Life Sciences, South Africa John P Davies --- Lawson’s Birding, Wildlife and Custom Safaris, South Africa Keith L Bildstein --- Acopian Centre for Conservation Learning, Hawk Mountain Sanctuary, USA Colleen T Downs --- School of Life Sciences, South AfricaRelatively 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 to be dung... -
Visitors to nests of Hooded Vultures Necrosyrtes monachus in northeastern South Africa
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Lindy J Thompson --- School of Life Sciences, South Africa John P Davies --- Lawson’s Birding, Wildlife and Custom Safaris, South Africa Maja Gudehus --- Selati Private Game Reserve, South Africa André J Botha --- Endangered Wildlife Trust, South Africa Keith L Bildstein --- Acopian Centre for Conservation Learning, Hawk Mountain Sanctuary, USA Campbell Murn --- Hawk Conservancy Trust, UK Colleen T Downs --- School of Life Sciences, South AfricaHooded 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 (including potential nest predators... -
Unearthing poison use and consequent anecdotal vulture mortalities in Namibia’s commercial farmland – implications for conservation
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Andrea Santangeli --- Helsinki Laboratory of Ornithology, Finnish Museum of Natural History, Finland Volen Arkumarev --- Bulgarian Society for Protection of Birds/BirdLife Bulgaria, Bulgaria Liz Komen --- Namibia Animal Rehabilitation Research and Education Centre, Namibia Peter Bridgeford --- Vultures Namibia, Namibia Holger Kolberg --- Directorate Scientific Services, Ministry of Environment and Tourism, NamibiaAcross 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, or they may be directly... -
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... -
The decline of an urban Hooded Vulture Necrosyrtes monachus population in Dakar, Senegal, over 50 years
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Wim C Mullié --- , Senegal François-Xavier Couzi --- Société d’Etudes Ornithologiques de la Réunion, France Moussa Sega Diop --- AfriWet Consultants, Senegal Bram Piot --- Cité Ndiatte Almadies, Senegal Theo Peters --- Royal Netherlands Embassy, Senegal Pierre A Reynaud --- 275 Rue Robert Schuman, France Jean-Marc Thiollay --- 2 Rue de la Rivière, FranceAs 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 for up-listing... -
Sexual dimorphism and plumage characteristics of juvenile Cape Vultures Gyps coprotheres
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Nobuhle T Mabhikwa --- Department of Forest Resources and Wildlife Management, Zimbabwe Margaret T Hirschauer --- VulPro NPO, South Africa Kerri Wolter --- VulPro NPO, South AfricaThe 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 Vultures aged one... -
Sexing Cape Vulture Gyps coprotheres based on head morphometrics
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Margaret T Hirschauer --- VulPro NPC, Skeerpoort, South Africa Tapiwa Zimunya --- VulPro NPC, Skeerpoort, South Africa Kerri Wolter --- VulPro NPC, Skeerpoort, South Africa Ara Monadjem --- All Out Africa Research Unit, Department of Biological Sciences, SwazilandThe Cape Vulture Gyps coprotheres is considered sexually monomorphic in the literature, but visual differences in head shape between the sexes have been observed. Furthermore, head morphometrics of other Gyps species show statistically significant variation between the sexes. We show... -
Hooded Vultures Necrosyrtes monachus nearly extirpated from Edo State, Nigeria: a report on the avian scavenger community
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Esther Nosazeogie --- AP Leventis Ornithological Research Institute, University of Jos, Nigeria Talatu Tende --- AP Leventis Ornithological Research Institute, University of Jos, Nigeria Ara Monadjem --- Department of Biological Sciences, SwazilandAvian scavengers, by feeding on carrion and other organic matter, provide critical ecosystem services. Vultures, the only obligate avian scavengers, have reportedly experienced massive population declines in Africa yet current knowledge regarding their status in most West African countries is... -
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... -
Impact of human activities on the reproduction of Hooded Vultures Necrosyrtes monachus in Burkina Faso
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Clément Daboné --- Laboratory of Animal Biology and Ecology, Burkina Faso Ralph Buij --- Department of Animal Ecology, The Netherlands Adama Oueda --- Laboratory of Animal Biology and Ecology, Burkina Faso Jacques Boko Adjakpa --- Laboratory of Research in Applied Biology, Benin Wendengoudi Guenda --- Laboratory of Animal Biology and Ecology, Burkina Faso Peter DM Weesie --- Science and Society Group, Faculty of Sciences and Engineering, The NetherlandsDuring the last decades, the critically endangered Hooded Vulture Necrosyrtes monachus has strongly declined across its African range. Although direct persecution has been suggested as a major cause of this decline, little is known about the impact of humans on... -
Conservation buffer sizes derived from movement data of adult Cape vultures (Gyps coprotheres) in South Africa
Item type: Journal Article • Journal: African Zoology • Authors: Jan A Venter --- School of Natural Resource Management, South Africa Francis R Martens --- School of Natural Resource Management, South Africa Kerri Wolter --- VulPro, South AfricaThe endangered Cape vulture (Gyps coprotheres) is facing a new emerging threat, e.g. wind energy development. Given their vulnerability to wind energy infrastructure, there is a necessity to establish proactive measures that could potentially mitigate future collisions, such as conservation... -
Ethnomedicinal use of vultures by traditional medicinal practitioners in Ghana
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Maxwell K Boakye --- PO Box KS 11041, Ghana Edward D Wiafe --- Department of Environmental and Natural Resources Management, Ghana Meyir Y Ziekah --- Kumasi Zoological Garden, Forestry Commission (Wildlife Division), GhanaVultures form an important ingredient used by traditional medicinal practitioners for the preparation of their therapeutic remedies. The aim of this study was to determine the vulture body parts used for alleviating human ailments by traditional medicinal practitioners in Ghana... -
Potential release sites and strategies for a Bearded Vulture Gypaetus barbatus reintroduction in South Africa
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Christiaan W Brink --- , South Africa Sonja Krüger --- , South Africa Arjun Amar --- , South AfricaThe southern African population of Bearded Vultures Gypaetus barbatus has declined rapidly and it is threatened with extinction. In response to this decline and the additional threats of wind farm developments in the core of the species’ range, it has... -
Traditional belief systems and trade in vulture parts are leading to the eradication of vultures in Nigeria: an ethno-ornithological study of north-central Nigeria
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Michael M Williams --- , Nigeria Ulf Ottosson --- , Nigeria Talatu Tende --- , Nigeria Justus P Deikumah --- , GhanaThe population of various species of vultures are declining rapidly across Africa, with noticeable declines in most areas including protected areas. This sudden decline of vultures in African countries, especially Nigeria, is quite alarming. One of the most common species... -
Local perceptions and sociocultural value of Hooded Vultures Necrosyrtes monachus in Burkina Faso, West Africa
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Clément Daboné --- University Centre of Tenkodogo/University Thomas Sankara, Burkina Faso Adama Ouéda --- University Joseph Ki-Zerbo, Burkina Faso Lindy J Thompson --- , South Africa Jacques Boco Adjakpa --- University of Abomey-Calavi, Benin Peter DM Weesie --- University of Groningen, The NetherlandsHooded Vultures have suffered from dramatic population declines in recent decades owing to anthropogenic pressures. To properly address this threat, the sociocultural perspectives towards this species should be considered. We examined peoples' perceptions, knowledge and beliefs on Hooded Vulture's sociocultural... -
Road counts reveal The Gambia’s West Coast region still has the densest population of Hooded Vultures Necrosyrtes monachus in Africa
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Mawdo Jallow --- , The Gambia Momodou L Dibba --- , The Gambia Fagimba Camara --- , The Gambia David R Barber --- , United States Keith L Bildstein --- , United States Lindy J Thompson --- , United StatesRoad surveys are a useful tool for comparing vulture population trends. Here we present data from road surveys to count Hooded Vultures Necrosyrtes monachus in The Gambia in 2017 and 2021. In the first nationwide road survey in November 2017... -
A new record of a chick falling from a nest in Limpopo province, South Africa, adds to the known causes of Hooded Vulture Necrosyrtes monachus mortality
Item type: Journal Article • Journal: African Zoology • Authors: --- , South Africa --- , South Africa --- University Thomas Sankara, Burkina Faso --- , South Africa --- , United StatesFor all species, causes of mortality, both anthropogenic and natural, should be recorded. In Critically Endangered species these records are even more important, owing to their potential impacts on small and/or declining populations. Here we present a case of natural... -
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... -
Mapping suitable habitat for Hooded Vultures Necrosyrtes monachus in one of the last West African strongholds for the species, The Gambia
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Michael Bode Agunbiade --- Brandenburg University of Technology Cottbus-Sefftenberg, Germany Jallow Mawdo --- Abuko Nature Reserve Headquarters, The Gambia Fagimba Camara --- West African Bird Study Association, Abuko Nature Reserve Headquarters, The Gambia Chefor Fotang --- Brandenburg University of Technology Cottbus-Sefftenberg, Germany Elvis Tangwa --- Palacky University (UP), Czech Republic Olayinka Amos Oladosu --- Brandenburg University of Technology Cottbus-Sefftenberg, Germany Luc Roscelin Dongmo Tédonzong --- Centre for Research and Conservation (CRC), Royal Zoological Society of Antwerp (RZSA), Belgium Yisa Ginath Yuh --- Planning and Environment, University of Concordia, Canada Darcy Ogada --- The Peregrine Fund, United States Klaus Birkhofer --- Brandenburg University of Technology Cottbus-Sefftenberg, GermanyHooded Vultures Necrosyrtes monachus are Critically Endangered, with numbers decreasing due to illegal poisoning, hunting for belief-based use and food, and habitat loss. In The Gambia, human activities currently benefit commensalism between humans and Hooded Vultures, as these birds primarily... -
Breeding dynamics and threats identified at a small colony of Critically Endangered Rüppell’s Vultures Gyps rueppellii in a Ugandan Forest Reserve
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Ivan Oruka --- Gulu University, Uganda Geoffrey M Malinga --- Gulu University, Uganda Stonewall S Kato --- Gulu University, Uganda Darcy Ogada --- , United States of America Derek Pomeroy --- Makerere University, UgandaThe Critically Endangered Rüppell’s Vulture Gyps rueppelli is a resident species in Uganda, with only one known breeding site in Luku Central Forest Reserve, Arua district. The natural resources in this protected forest reserve are under severe threat due to... -
Breeding population status and nesting preferences of the White-backed Vulture Gyps africanus in western Serengeti, northern Tanzania
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Vainess Laizer --- Department of Wildlife Management, College of Forestry, Wildlife and Tourism, Sokoine University of Agriculture, Tanzania Peter S Goodman --- Grumeti Fund, Tanzania Noel Mbise --- Grumeti Fund, Tanzania Claire Bracebridge --- The Peregrine Fund, The World Center for Birds of Prey, United States Kate Tiedeman --- Max Planck Institute for Animal Behavior, Germany Corrine J Kendall --- The Peregrine Fund, The World Center for Birds of Prey, United States Robert Byamungu --- Department of Wildlife Management, College of Forestry, Wildlife and Tourism, Sokoine University of Agriculture, Tanzania Shombe N Hassan --- Department of Wildlife Management, College of Forestry, Wildlife and Tourism, Sokoine University of Agriculture, Tanzania Kristen D Snyder --- Grumeti Fund, TanzaniaThe White-backed Vulture Gyps africanus is Critically Endangered because of its decline across its range in Africa, largely due to poisoning. The western corridor of the Serengeti ecosystem in northern Tanzania hosts a significant number of individuals of this species... -
Monitoring survival probabilities of Cape Vultures Gyps coprotheres in South Africa, using GPS tracking data
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Sophie Pulcella --- Knowsley Safari, Prescot, United Kingdom Kerri Wolter --- Vulpro NPC, South Africa Juliana Pinto --- Vulpro NPC, South Africa Brian Kuhn --- Vulpro NPC, South Africa Wolfgang Fiedler --- Max Planck Institute of Animal Behaviour, GermanyThe Cape Vulture Gyps coprotheres is a species of Old-World vulture endemic to southern Africa. Currently listed as ‘Vulnerable’ by the IUCN, they face increasing threats from anthropogenic hazards, such as collisions with man-made infrastructure and poisoning events, leading to... -
Updates on population status of vultures in Nazinga Game Ranch, Burkina Faso
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Clément Daboné --- Animal Biology and Ecology, University Centre of Tenkodogo/Thomas Sankara University, Burkina Faso Idrissa Ouédraogo --- Laboratory of Animal Biology and Ecology, Joseph Ki-Zerbo University, Burkina Faso Idrissa Ouédraogo --- Laboratory of Animal Biology and Ecology, Joseph Ki-Zerbo University, Burkina Faso Adama Ouéda --- Laboratory of Animal Biology and Ecology, Joseph Ki-Zerbo University, Burkina Faso Wendengoudi Guenda --- Laboratory of Animal Biology and Ecology, Joseph Ki-Zerbo University, Burkina Faso Peter DM Weesie --- Integrated Research on Energy, Environment and Society, University of Groningen, The NetherlandsIn the early 2000s, the ornithological community was alerted to the vulture population decline in West Africa. Since then, the situation of vultures in this area has not been updated, specifically in Burkina Faso’s protected areas. To find out more,...