Habitat and Ecology
IUCN Red List Assessment
Red List Category
Red List Criteria
The species suffers mortality from the ingestion of poison left for pests (not vultures) (Diekmann and Strachan 2006) and potentially Diclofenac, a non-steroidal anti-inflammatory drug often used for livestock, and which is fatal to Gyps spp. when ingested at livestock carcasses (Komen 2006, BirdLife International news www.birdlife.org/news 2007). In 2007, Diclofenac, was found to be on sale at a veterinary practice in Tanzania (BirdLife International news www.birdlife.org/news 2007). In addition, it was reported that in Tanzania, a Brazilian manufacturer has been aggressively marketing the drug for veterinary purposes (C. Bowden in litt. 2007) and exporting it to 15 African countries (BirdLife International news www.birdlife.org/news 2007). A single poisoning incident can kill 50-500 birds, making the species susceptible to sudden local declines (M. Diekmann in litt. 2006). The collapse of a key colony in eastern Botswana has been attributed to human disturbance, especially insensitive tourism (Borello and Borello 2002). The ongoing urbanisation around Hartbeespoort Dam and the Magaliesberg Mountains, South Africa, has limited the extent of natural areas for foraging by vultures, perhaps resulting in their reliance on supplementary food at vulture "restaurants" (Wolter et al. unpubl.). If such restaurants were closed, vultures might be exposed to unsafe carcasses (Wolter et al. unpubl.).
Poor grassland management in some areas has promoted bush encroachment, making finding carcasses more difficult for vultures (Schultz 2007). There are records of at least 120 individuals (21 incidents) of this species drowning in small farm reservoirs in southern Africa between the early 1970s and late 1990s (Anderson et al. 1999), although modifications to many reservoirs have now been made (Boshoff et al. 2009). Raptors are thought to drown after attempting to bathe or drink, with mass vulture drownings probably due to the triggering of group behaviour by the actions of one bird (Anderson et al. 1999). In Magaliesberg a large number of fatalities have been associated with powerline collisions and electrocutions, and this is one of the main factors causing the ongoing decline of the species in South Africa (K. Wolter in litt. 2007). It is reported that a lack of adult females in the relict Namibian population may have led to four males breeding with G. africanus, although this is not thought to be a problem across southern Africa (Diekmann and Strachan 2006). Patterns in the contraction of the species's range since the 1950s imply that climate change could be an underlying factor driving its decline through changes in habitats and decreases in prey populations, though further research is required to confirm a link (Simmons and Jenkins 2007).
CITES Appendix II. CMS Appendix II. It is legally protected throughout its range. Some breeding colonies lie within protected areas (Barnes 2000). Non-governmental organisations have successfully raised awareness among farming communities in South Africa of the plight of this species (Barnes 2000). Many nestlings of this species were colour-ringed in southern Africa in the 1970s and 1980s (Botha 2006). The national electricity supplier in South Africa has replaced pylons in some regions with a design that reduces electrocution risk to large birds (Barnes 2000), and breeding numbers have increased in one area (Wolter et al. 2007). Supplementary feeding at vulture restaurants may have helped to slow declines in some areas (Barnes 2000). The establishment of a restaurant at Nooitgedacht, South Africa, is thought to have helped promote the recolonisation of the former colony there, and another restaurant has possibly contributed the species's recovery in Magaliesberg (Wolter et al. unpubl.), although the extent of the species's dependence on such artificial food sources is yet to be studied in depth (W. D. Borello in litt. 2007, Wolter et al. unpubl.). Supplementary feeding is known to significantly increase the survival rate of first-year birds in the Western Cape Province of South Africa (Piper et al. 1999). 37 individuals were in captivity in Namibia in 2011, with 7 breeding pairs from which at least 2 chicks have been hatched (Anon. 2011). In October 2005, 16 birds from South Africa were released in Namibia and, although at least two have perished (Diekmann and Strachan 2006) and one was taken into care with a companion (Komen 2006), data on flight patterns and breeding behaviour have been recorded from two birds that were fitted with satellite transmitters (Anon. 2006). By 2006, five birds had been fitted with satellite tracking collars (Diekmann and Strachan 2006, Bamford et al. 2007). In Namibia, both communal and commercial farmers have been educated about the benefits that vultures bring and thus the disadvantages of poisoning carcasses, whilst there is also an education centre and education programme for schools (Diekmann and Strachan 2006). A conservation workshop for the species was held in March 2006 and was attended by 19 individuals (Komen 2006). The group reassessed the status of the species and the threats it faces, and decided on conservation actions. A task force was established and people were identified to manage conservation actions for each of the key colonies in southern Africa. In the East Cape awareness programmes have led to modifications in cement reservoirs to prevent drownings as well as aiming to reduce indirect poisoning. A press release was circulated in March 2006 raising awareness of the dangers of using diclofenac in the treatment of cattle. In 2006, the re-establishment of monitoring was expected at the species's only colony in Zimbabwe (Komen 2006). A press release was circulated in July 2007 to raise awareness of the impacts of hunting for medicinal and cultural reasons in southern Africa (McKean and Botha 2007). The threat posed by anti-inflammatory drugs in southern Africa is under investigation (K. Wolter in litt. 2007). An expert workshop on the species's conservation was held in South Africa in March 2006 (Boshoff and Anderson 2006). Conservation Actions Proposed
Develop conservation plans for each of the 18 'core' colonies through the Cape Griffon Task Force (Boshoff and Anderson 2007, Jenkins 2010). Protect breeding colonies (Barnes 2000), and prevent uninhibited access by tourists to nesting sites (Borello and Borello 2002, Hancock 2008). Develop captive-breeding projects and mitigate impacts from poisoning and electrocution (Barnes 2000). Increase availability of livestock carcasses to G. coprotheres in areas where current practices do not allow this. Develop conservation partnerships with the farming community (Barnes 2000). Investigate the burgeoning exploitation for traditional medicine (Barnes 2000). Reduce hunting for medicinal and cultural reasons (McKean and Botha 2007). Monitor food availability, especially through the nestling period. Carry out a complete survey of its breeding sites (Barnes 2000). Continue population monitoring and demographic studies (Barnes 2000). Conduct research to assess the potential impact of climate change compared with other threats (Simmons and Jenkins 2007). Raise awareness amongst pastoralists of the dangers of using Diclofenac for livestock (BirdLife International news www.birdlife.org/news 2007). Lobby governments to outlaw the sale of Diclofenac for veterinary purposes (BirdLife International news www.birdlife.org/news 2007).
The Cape griffon or Cape vulture (Gyps coprotheres), also known as Kolbe's vulture, is an Old World vulture in the family Accipitridae, which also includes eagles, kites, buzzards and hawks. It is endemic to southern Africa, and is found mainly in South Africa, Lesotho, Botswana and in some parts of northern Namibia. It nests on cliffs and lays one egg per year.
This large vulture is dark brown except for the pale wing coverts. The adult is paler than the juvenile, and its underwing coverts can appear almost white at a distance. The average length is about 96–115 cm (38–45 in) with a wingspan of 2.26–2.6 m (7.4–8.5 ft) and a body weight of 7–11 kg (15–24 lb). They are on average the largest raptor in Africa, although they are subservient to the powerful lappet-faced vulture. After the Himalayan griffon vulture and the cinereous vulture the Cape vulture is the third largest Old World vulture. The two prominent bare skin patches at the base of the neck, also found in the white-backed vulture, are thought to be temperature sensors and used for detecting the presence of thermals.
The species is listed by the IUCN as "Vulnerable", the major problems it faces being poisoning, disturbance at breeding colonies and powerline electrocution. The current population is estimated at 8,000.
- BirdLife International (2013). "Gyps coprotheres". IUCN Red List of Threatened Species. Version 2013.2. International Union for Conservation of Nature. Retrieved 26 November 2013.
- Raptors of the World by Ferguson-Lees, Christie, Franklin, Mead & Burton. Houghton Mifflin (2001), ISBN 0-618-12762-3
- vulture facts- Arkive.org (2011).
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