Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 23 for “"Vultures"”.
-
Conservation of raptors and vultures in Botswana: with a focus on lappet-faced vultures Torgos tracheliotos
… important for many of these species, including vultures, yet information on most raptors in this area is lacking. Along with the rest of the region, Botswana has seen a rise in poisoning incidences which have decimated vulture populations and threaten other scavenging raptor species. As a …
-
The reintroduction of bearded vultures in South Africa: a feasibility analysis
The southern African population of bearded vultures, Gypaetus barbatus, is declining rapidly and plans for windfarm developments within the core of this species' range threaten to accelerate the population's passage to extinction. As an insurance against such a situation a reintroduction has been …
-
Home range, habitat use, behavior, and morphology of the Gettysburg vultures
… and northern Maryland. Black and turkey vultures did not move randomly over the study area but remained within large (X̅ = 15,993 and 62,953 ha respectively) home ranges. Ninety five percent of radioed vulture activity was within 15 km of the location at which the birds were trapped. …
-
Assessing the anthropogenic threats to vultures in the communal farmlands of Namibia
… to look at the farmers' local knowledge about vultures, their attitudes towards them and any cultural value that vultures hold. Overall vultures were viewed positively by farmers. The cultural use of vulture parts appeared fairly uncommon, with 9.5% of farmers reporting that they knew of uses. …
-
Exploring the use of GPS-tracking to investigate the diet of African vultures
Vultures are highly mobile scavengers that cover vast distances on their daily foraging trips. Vultures display specific spatial and behavioral patterns when feeding on carcasses, and these behaviors are potentially identifiable in the tracks of geographical positioning system (GPS)- tagged birds. …
-
Habitat selection of adult bearded vultures Gypaetus barbatus in southern Africa: implications for conservation
… this study, we used data from nine adult Bearded Vultures fitted with Global Positioning System (GPS) satellite tags to determine which habitat is being selected. We modelled habitat selection in relation to various topographic and habitat variables, including information on built-up areas (i.e., …
-
Sheep farmers and turkey vultures (Cathartes aura) in the Falkland Islands: from conflict to coexistence
… conflict regarding the lethal control of turkey vultures Cathartes aura by sheep farmers in the Falkland Islands. The conflict escalated after the passage of a government policy limiting the traditional method of vulture management (i.e., shooting). I interviewed half of the sheep farmers on the …
-
Carcass Feeding for Captive Vultures: Testing Assumptions about Zoos and Effects on Birds and Visitors
… and usually inquisitive scavengers like vultures, a lack of activity and behavioral opportunities could be a welfare problem in captivity; providing them with a more complex food item might mitigate this. The goal of this study was, thus, to assess the frequency of carcass feeding for …
-
Changes in nesting numbers and breeding success of African White-backed Vultures in northern Botswana
African White-backed Vultures have recently been uplisted to Critically Endangered by the IUCN due to declines across their range mainly linked to high levels of poisoning. Botswana likely supports significant numbers of this species, but as yet there is no published information on their population …
-
Black and turkey vulture roost dynamics, marking, morphology and nesting in Virginia
… and 1983 to peaks in December 1981 and 1983. Vultures used two temporary roosts at nearby landfills from March through October in 1983. Vultures marked with cattle eartags were observed moving among roosts. Road counts were poorly correlated (r = 0.39, P = 0.05, r = 0.39, P = 0.12, black …
-
Identifying drivers of Cape vulture (Gyps coprotheres) space use in southern Africa
… that drive the space use patterns of Cape vultures in an effort to inform future conservation strategies. I deployed Global Positioning System (GPS) tracking units attached to vultures caught from the wild in the main breeding range of the species in northern South Africa, and in north …
-
The influence of vulture restaurants on breeding success and nestling body condition of Gyps vulture populations across southern Africa
… between chick condition (African White-backed Vultures) and breeding success (Cape Vultures/African White-backed Vultures) in relation to a variety of variables which described levels of access to vulture restaurants. My data suggest the potential of vulture restaurants to increase breeding …
-
The role of supplementary feeding sites in vulture conservation in South Africa
… and unwanted animal parts are provided for vultures to feed on. This is proposed to be a win-win scenario in that contributors to the site receive a free carcass disposal service while simultaneously supporting vulture populations. SFS are assumed to benefit vultures through enhancing …
-
Space and resource use of Cape Vultures at an isolated colony in the Western Cape: importance of livestock agriculture to this thriving population
Vultures are keystone species providing crucial ecosystem services, yet their numbers have declined globally, including in Africa, due to various threats. Understanding their habitat use and resource needs is vital for conservation. The Cape Vulture (Gyps coprotheres) colony at Potberg in the De …
-
An investigation into the root of two of the main vulture threats: poisoning and belief-based use of vulture body parts in Southern Kenya
Vultures are crucial scavengers, removing carcasses, and maintaining the healthy and clean environments. However, their populations are rapidly declining. Six of eight Kenyan vulture species are currently listed as ‘Endangered' or ‘Critically Endangered' on the IUCN Red List. Poisoning caused by …
-
Quantifying national abundance changes of raptors across Botswana using repeat road surveys
… trends of many raptor species, especially vultures. Fortuitously, Botswana has over 55,000 km of raptor road transectsurveys originally conducted between 1991-1995. Over two decades later, researchers repeated some of those surveys (c. 21,000 km) in the northern part of Botswana, which …
-
How well do buffer circles capture the ranging behaviours of territorial raptors?
… with very large home ranges (e.g. Lappet-faced Vultures) even buffer circles that were 3 times the size failed to cover 95% of the KDE polygons.
Page 1 of 2