Relevant bibliographies by topics / Vulture

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Academic literature on the topic 'Vulture'

Author: Grafiati
Published: 4 June 2021
Last updated: 11 February 2022

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Journal articles on the topic "Vulture"

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DURIEZ, OLIVIER, SANDRINE DESCAVES, REGIS GALLAIS, RAPHAËL NEOUZE, JULIE FLUHR, and FREDERIC DECANTE. "Vultures attacking livestock: a problem of vulture behavioural change or farmers’ perception?" Bird Conservation International 29, no. 03 (April 12, 2019): 437–53. http://dx.doi.org/10.1017/s0959270918000345.

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SummaryHuman-wildlife conflicts are often partly due to biased human perceptions about the real damage caused by wildlife. While Griffon Vultures Gyps fulvus are obligate scavengers, 156 complaint reports about vultures attacking livestock were officially recorded over eight years (2007–2014) in France. We investigated whether this conflict could be explained by a change in vulture behaviour, or by a biased perception by farmers. If vultures became predators, as a consequence of density-dependent processes, we predicted that reports would concern mostly ante-mortem consumption of healthy livestock and would be temporally and spatially correlated to vulture population size and space use. Under the hypothesis of perception bias of farmers, we predicted that reports would concern mostly post-mortem consumption, and would be more numerous in areas where farmers are less familiar with vultures and where herds are less attended by shepherds. The spatio-temporal distribution of reports was not correlated with the vulture’s population trend and was not centred on the core area of vulture home range. In 67% of reports, vultures consumed post-mortem an animal that had died for other reasons. In 18% of reports, vultures consumed ante-mortem an animal that was immobile and close to death before vulture arrival. The fact that 90% of complaining farmers did not own vulture supplementary feeding stations and that 40% of these farms were located outside protected areas (where most education programmes take place) suggests that most farmers had little familiarity or personal knowledge of vultures. There was no shepherd witness present in 95% of the reports. Therefore, the hypothesis of a perception bias due to lack of knowledge was most likely to explain this vulture-livestock conflict rather than the hypothesis of a recent change in vulture feeding behaviour. Environmental education should be better included in conservation programmes and enhanced in areas where vultures are expanding to recolonise their former distribution range.
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JHA, Kaushalendra K., Michael O. CAMPBELL, and Radhika JHA. "Vultures, their population status and some ecological aspects in an Indian stronghold." Notulae Scientia Biologicae 12, no. 1 (March 31, 2020): 124–42. http://dx.doi.org/10.15835/nsb12110547.

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Indian vultures have important ecological and socio-economic functions and are increasingly studied, per their ecological role and recently, their catastrophic populations’ decline. However, there are few studies of vultures in central India, a vulture stronghold. The present paper examined the presence, distribution per landcover variation, roosting and nesting habits of vultures in this region. Both quantitative (total count) and qualitative (questionnaire survey) methods of research were applied. The hypotheses were that vulture presence is higher in forested areas, unaffected by agricultural development (excepting the Egyptian vulture); as well as that vultures are more likely to roost and nest in large trees and on cliffs in open landcover. Vulture species recorded in summer and winter counts were the Long-billed vulture (Gyps indicus, Scopoli, 1786), Egyptian vulture (Neophron percnopterus, Linnaeus, 1758), White-rumped vulture (Gyps bengalensis, Gmelin, 1788), Eurasian Griffon vulture (Gyps fulvus, Hablizl, 1783), Red-headed vulture (Sarcogyps calvus, Scopoli, 1786), Cinereous vulture (Aegypius monachus, Linnaeus, 1766) and Himalayan Griffon vulture (Gyps himalayensis, Hume, 1869). Their average total abundance was of 7,028 individuals, maximum being Long-billed vulture (3,351) and minimum being Cinereous vulture (39). Thematic maps documented distributions in different agroclimatic regions and ecozones. Orography and forest structure influenced vulture presence, but human disturbance did not. Vulture protection, food monitoring and human-induced disturbances are manageable with critical, informed and flexible policies. These findings contribute to monitoring and management planning for vulture conservation in Central India and elsewhere.
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Karimov, T., and A. Mammadov. "The Status of Vultures Neophron Percnopterus, Gypaetus Barbatus, Gyps Fulvus, Aegypius Monachus (Accipitriformes) in Azerbaijan." Ukrainian Journal of Ecology 9, no. 4 (December 10, 2019): 565–70. http://dx.doi.org/10.15421/2019_791.

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The inventory of vultures was conducted in 2004–2016. Modern areal and nesting places of Griffon vulture (Gyps fulvus), Black vulture (Aegypius monachus), Egyptian vulture, (Neophron percnopterus) and Bearded vulture (Gypaetus barbatus) in Azerbaijan was determined. Our results reveals that 60.6% (n=20) of nesting locations were found in Lesser Caucasus, 36.3% (n=12) in Great Caucasus, 3.0% (n=1) in Talysh mountains. Over the last 13 years the total known population of these species decreased by 15.3%. Primary reason of this decline is the abandonment of livestock farms and graze lands, accompanied by the expansion of cultivated areas (P = 0.0001) since large domestic ruminants are important source of food for Griffon vultures,. The other important threats to these species were identified as nestling removal, capture and trade of wild birds for exhibiting them in zoological gardens and roadside restaurants, destructing the nests of Black vultures, ecotourism and recreation has impacted on the decrease in the number of Griffon vultures (P =0.0001). In 2016, 61 pairs of Griffon vulture, 59 pairs of Egyptian vulture, 16 pairs of Black vulture, 9 pairs of Bearded vulture were recorded in the territories of Azerbaijan.
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Navaneethan, Balasubramaniam, Kalyanasundaram Sankar, Qamar Qureshi, and Manas Manjrekar. "The status of vultures in Bandhavgarh Tiger Reserve, Madhya Pradesh, central India." Journal of Threatened Taxa 7, no. 14 (November 26, 2015): 8134. http://dx.doi.org/10.11609/jott.2428.7.14.8134-8138.

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<p>The study on the status of vultures in Bandhavgarh Tiger Reserve (BRT), central India was carried out from January 2011 to March 2013 in different seasons using opportunistic sightings. In total, 265 observations were made in which 1,366 individuals belonging to four species were recorded. Among these, Long-billed Vulture <em>Gyps indicus</em> were more frequently sighted followed by White-backed Vulture <em>Gyps africanus</em>, Red-headed Vulture or Asian King Vulture <em>Sarcogyps calvus</em> and Egyptian Vulture <em>Neophron percnopterus</em>. During the study period, 27 vulture nests were identified, of these 25 nests belonged to Long-billed Vulture and two nests were that os White-backed Vulture. No attempts were made to examine the nesting site characteristics and the breeding status of vulture in BTR. Vultures were largely observed feeding on carnivore kills such as chital, sambar, nilgai, wild pig, domestic cattle and common langur. On a few occasions vultures were seen feeding on the dumped cattle carcasses near villages. The study reveals that vulture population in BTR was mainly dependent on large carnivore kills. Regular monitoring of vulture nest sites in the study area is recommended to assess their breeding success. Since we observed the vultures feeding on dumped livestock carcasss near villages, use of Diclofenac in the villages around the park should be monitored as it has caused a large-scale mortality in vultures in different regions of the country. </p><div> </div>
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GILBERT, MARTIN, RICHARD T. WATSON, SHAKEEL AHMED, MUHAMMAD ASIM, and JEFF A. JOHNSON. "Vulture restaurants and their role in reducing diclofenac exposure in Asian vultures." Bird Conservation International 17, no. 1 (March 2007): 63–77. http://dx.doi.org/10.1017/s0959270906000621.

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The provision of supplementary food at vulture restaurants is a well-established tool in the conservation of vulture species. Among their many applications, vulture restaurants are used to provide a safe food source in areas where carcasses are commonly baited with poisons. Rapid and extensive declines of vultures in the Indian subcontinent have been attributed to the toxic effects of diclofenac, a pharmaceutical used in the treatment of livestock, to which vultures are exposed while feeding on the carcasses of treated animals. A vulture restaurant was established at the Oriental White-backed Vulture Gyps bengalensis colony at Toawala, in Punjab province Pakistan, to test the effectiveness of the technique in modifying ranging behaviour and mortality at the colony. Six male vultures were fitted with satellite transmitters to describe variation in movement and home-range during periods when safe food was alternately available and withheld at the vulture restaurant. There was considerable variation in individual home-range size (minimum convex polygons, MCP, of 1,824 km2 to 68,930 km2), with birds occupying smaller home-ranges centred closer to the restaurant being more successful in locating the reliable source of food. Fixes showed that 3 of the tagged vultures fed at the vulture restaurant and the home-range of each bird declined following their initial visit, with a 23–59% reduction in MCP. Mean daily mortality during provisioning was 0.072 birds per day (8 birds in 111 days), compared with 0.387 birds per day (41 birds in 106 days) during non-provisioning control periods. Vultures tended to occupy greater home-ranges, cover greater distances each day and spend proportionately more time in the air during the late brooding and post-breeding seasons. Attendance at the vulture restaurant also declined during this period with fewer birds visiting less often and no tagged vultures visiting the vulture restaurant at all. These findings indicate that vulture restaurants can reduce, but not eliminate, vulture mortality through diclofenac exposure and represent a valuable interim measure in slowing vulture population decline locally until diclofenac can be withdrawn from veterinary use.
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HLA, HTIN, NAY MYO SHWE, THURA WIN HTUN, SAO MYO ZAW, SIMON MAHOOD, JONATHAN C. EAMES, and JOHN D. PILGRIM. "Historical and current status of vultures in Myanmar." Bird Conservation International 21, no. 4 (January 5, 2011): 376–87. http://dx.doi.org/10.1017/s0959270910000560.

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SummaryConcerns for the long-term survival of vulture populations on the Indian Subcontinent, owing to widespread poisoning by the veterinary drug diclofenac, have led to increased conservation focus on South-East Asian countries where diclofenac is not used and relict populations of vultures occur. We document here how White-rumped, Slender-billed and Red-headed Vultures have declined substantially in abundance and contracted in range in Myanmar over the last 50 years. Using a vulture restaurant method we determined that the population of vultures in Myanmar is at least 136 individuals, made up of at least: 62 White-rumped Vultures, 21 Slender-billed Vultures, 51 Himalayan Vultures and two Red-headed Vultures. The decline in the resident Gyps species is most likely due to declines in wild ungulate populations. Our population estimates are provisional and the survey covered only a proportion of the possible vulture range within Myanmar. Himalayan Vultures were not recorded in Myanmar in historical times, and possible reasons for the recent upsurge in records are discussed. Myanmar presents an opportunity of global significance for vulture conservation, due to the persistence of three Critically Endangered vulture species in a country where diclofenac is not used.
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Grussu, Marcello, and Sardinian Ornithological Group. "Evolution of the vulture population on a Mediterranean island. The Sardinian instance (Italy)." Vulture News 76 (July 10, 2020): 6–19. http://dx.doi.org/10.4314/vulnew.v76i1.2.

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On the Italian island of Sardinia at the beginning of the 20th century there was still an established population of the Bearded Vulture (about 35 pairs), Black Vulture (about 150 pairs) and the Griffon Vulture was “very common”. However, in the early decades of the 20th century there was a rapid and catastrophic reduction of the vulture populations on Sardinia, with the extinction of Bearded Vulture (1968-69) and the Black Vulture (1961), and the contraction of the population of Griffon Vulture (1000-1400 birds in 1945 to 100-140 birds in 1975 and 12 breeding pairs in 2007). The collection of skins and eggs, followed by hunting, poaching, killing and the use of poisoned baits for pest control were the main causes of the decline of the vultures on Sardinia. These causes were accompanied by an increase of disturbance at the breeding sites, and by a gradual decrease of pastoralism, which has led to a reduction in food availability. More recently, there have been unsuccessful attempts to reintroduce Bearded Vultures and Black Vultures, whereas after various restocking and greater protection projects, the Griffon Vulture population has increased (to 57 pairs and 230-250 birds in 2019). The Egyptian Vulture bred in Sardinia for the first time in 2019. Currently, collection and killing of vultures, and the legal use of poisoned baits have all been removed in Sardinia and the environmental situation now seems appropriate for new attempts to reintroduce the two extinct species.
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Phuyal, Sunita, Hemant R. Ghimire, Karan B. Shah, and Hem S. Baral. "Vultures and people: Local perceptions of a low-density vulture population in the eastern mid-hills of Nepal." Journal of Threatened Taxa 8, no. 14 (December 26, 2016): 9597. http://dx.doi.org/10.11609/jott.2492.8.14.9597-9609.

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The cause for rapid decline of the South Asian vulture population in 1990s was unknown for many years until diclofenac was proved to be the main reason for such decline in 2004. The vulture populations from Nepal has also undergone rapid decline that causes low awareness among people about its ecological importance. For declining species that have large range and are mostly associated with humans, people’s attitudes can have direct effects on their survival because of the multiple linkages and potential for both positive and negative impacts of human behaviour for these large scavengers. However, little is known about vultures in the eastern mid-hills of Nepal. Therefore, we conducted a study in Ramechhap, a district in the eastern mid-hills of Nepal, to assess the vultures’ status and human relations using transect and questionnaire surveys respectively. Himalayan Griffons Gyps himalayensis and Egyptian Vultures Neophron percnopterus were found in the area, and the majority of respondents interviewed had a positive attitude towards vultures (58.8%) and their conservation (47.3%). Although neglected in previous studies, a neutral attitude (20% towards vultures and 15.8% towards vulture conservation) can be significant (largely related to ignorance) and can be readily turned to negative due to the vulture’s carcass consuming behaviour and lack of conventional appeal to many people, with implications for the success of a conservation programme. In our study, carcass scarcity appeared to be an increasing concern with about 90% of the respondents reporting burying cattle carcasses, and that this practice has recently increased. In the course of the study period, however, two (unburied) carcasses were observed. Our study found that nimesulide, a potentially toxic NSAID for vultures, was used for veterinary purpose in the study area, which could be a serious threat to vultures. Other human activities such as carcass poisoning pose threats to vultures in the study area. Therefore, for long term vulture conservation, local attitudes and behaviour should be considered along with ecological aspects of vultures.
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Venkitachalam, R., and S. Senthilnathan. "Status and population of vultures in Moyar Valley, southern India." Journal of Threatened Taxa 8, no. 1 (January 26, 2016): 8358. http://dx.doi.org/10.11609/jott.2522.8.1.8358-8364.

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<p>Four species of vultures were surveyed using road transects in two parts of the Moyar Valley, three of these are Critically Endangered by IUCN criteria and one is Endangered. The vulture study was done for the first time in Nilgiri North Forest Division and Sathyamangalam Tiger Reserve of Moyar Valley to determine the flock size in the three species of vultures and also to get a rough estimation of vultures. The results show higher flock size and higher densities in Nilgiri North Forest Division than in Sathyamangalam Tiger Reserve and the most numerous of these was the White-rumped Vulture. There is also evidence of seasonal movements in Nilgiri North Forest Division. These data represent the first systematic survey results from the area and demonstrate the significance of the Moyar Valley for all four Endangered vulture species, probably the main stronghold remaining in southern India. They are White-rumped Vulture <em>Gyps bengalensis</em>, Indian Vulture <em>Gyps indicus</em>, Red-headed Vulture <em>Sarcogyps calvus</em> and Egyptian Vulture <em>Neophron percnopterus</em>. The study recommends that immediate long-term conservation efforts should be taken to save the Critically Endangered vultures in the Moyar Valley.</p><div> </div>
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HILLE, SABINE M., FRÄNZI KORNER-NIEVERGELT, MAARTEN BLEEKER, and NIGEL J. COLLAR. "Foraging behaviour at carcasses in an Asian vulture assemblage: towards a good restaurant guide." Bird Conservation International 26, no. 3 (December 11, 2015): 263–72. http://dx.doi.org/10.1017/s0959270915000349.

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SummaryVulture populations are declining steeply worldwide. Vulture ‘restaurants’ or feeding stations are a tool for maintaining and monitoring numbers, but individual species may be disadvantaged by the effects of carcass distribution, carcass size and interspecific aggression. To test the degree to which restaurants give opportunities for each species to access the food provided, we studied behaviour and morphology in three Critically Endangered species of vulture in Cambodia: the gregariously breeding and feeding White-rumped Vulture Gyps bengalensis and Slender-billed Vulture G. tenuirostris, and the solitary Red-headed Vulture Sarcogyps calvus. We video-recorded attendance time, attendance order and dominance behaviour at different-sized carcasses. Interspecific aggression at carcasses was least frequently shown by the ‘small’ White-rumped Vulture. The relatively ‘large’ Slender-billed and ‘medium’ Red-headed Vultures showed aggression more regularly and at similar levels. However, the latter avoids conflict by waiting until Gyps vultures are no longer crowding at the carcass, although its arrival at carcasses was correlated with total number of vultures present. While more numerous than Red-headed, the two Gyps vultures are more dependent on large carcasses, which increases their vulnerability to further declines in wild large ungulate species. Body size, number of individuals, hunger levels and carcass size and availability all influence carcass attendance behaviour. An increase in the number and spatial distribution of restaurants as well as of carcass size range could boost numbers of all vulture species.
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Dissertations / Theses on the topic "Vulture"

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Piper, Steven Edward. "Mathematical demography of the Cape vulture." Doctoral thesis, University of Cape Town, 1994. http://hdl.handle.net/11427/19843.

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The Cape Vulture Gyps coprotheres is one of the world's largest avian scavengers and was once widely distributed in southern Africa, to which it is endemic. It has suffered major changes of fortune in recorded history and has, at least twice, undergone large range contractions and expansions in the Cape Province. It has variously been classified as 'rare', 'vulnerable' or 'threatened'. It is currently thought, by some, to be in decline. The central aim of these researches is to answer the 'Grand Question': What is the probability that the Cape Vulture will survive well into the twenty-first century as a free-flying bird? This is followed by a secondary question: What is the stability of the population in space, time and age-structure?
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Carr, Raymond Eric. "Genetic variability within and between populations of turkey vultures in central Indiana." Virtual Press, 2000. http://liblink.bsu.edu/uhtbin/catkey/1189408.

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Zimunya, Tapiwa. "The influence of vulture restaurants on breeding success and nestling body condition of Gyps vulture populations across southern Africa." Master's thesis, University of Cape Town, 2018. http://hdl.handle.net/11427/29719.

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Vulture populations in many parts of the world continue to decline owing to numerous threats, such as lack of adequate food sources, poisoning and collisions with power-lines. Worldwide, supplementary feeding sites (hereafter, vulture restaurants) have been used as a conservation tool aimed at supporting vulture populations. However, in many parts of the world there is little scientific evidence about their effectiveness in aiding vulture populations. Here, I assessed the relationship 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 success in vulture populations. Breeding success generally increased for nests closer to vulture restaurants. There was a significant positive correlation between African White-backed Vulture breeding success and proximity to vulture restaurants (p< 0.05), but little evidence to support such a relationship for Cape Vultures (p> 0.05). Nestling body condition of African White-backed Vultures was also not influenced by proximity to vulture restaurants (p> 0.05). Findings of this study provide motivation on the use of vulture restaurants as a conservation strategy across southern Africa. The current study informs future conservation efforts on the use of vulture restaurants across the region, particularly in countries where a network of vulture restaurants is still being established.
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Fry, Jered N., and Steven E. Tutaj. "A business case analysis for the Vulture program." Monterey, California. Naval Postgraduate School, 2010. http://hdl.handle.net/10945/10488.

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MBA Professional Report
The Vulture program is an initiative being developed by the Defense Advanced Research Projects Agency (DARPA). The end goal of the Vulture program is to develop a high altitude long endurance (HALE) unmanned aerial vehicle (UAV) that is capable of maintaining a 1,000-pound payload on station for five years. The DARPA goals for the Vulture program include, at a minimum, the development and demonstration of advanced reliability technologies for the proposed future Vulture system. It is envisioned that Vulture will provide affordable, persistent coverage over an area of interest for surveillance and communications relay missions. The purpose of this study is to estimate the potential cost savings and identify other benefits associated with the potential operational use of Vulture. This study conducts a business case analysis (BCA) comparing the estimated costs of the Vulture program to those of the Global Hawk and Global Observer systems. Sensitivity analyses are performed on the cost variables, as well as a general risk assessment for Vulture.
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Clark-Phinney, Marcia. "Effect of group foraging size on vigilance by turkey vultures (Cathartes aura)." Virtual Press, 2001. http://liblink.bsu.edu/uhtbin/catkey/1217395.

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Turkey vultures were observed foraging alone and in groups of up to 16 individuals. Vigilance behavior was quantified by monitoring 4 aspects of vulture foraging behavior (proportion ofhead up time, number of head raises per minute, time interval between head raises, and proportion of time spent foraging during foraging bouts). Although solitary foragers spent 91% of their foraging bouts actively foraging, a greater proportion (47%)of their foraging time was spent with their heads up compared to individuals occurring in groups (<29%). Similarly, individuals in small groups (2-3 and 5-7) were more vigilant than individuals in large groups (8-16). Solitary foraging vultures raised their heads at a significantly higher rate than those foraging in groups of 5-7 or 8-16 and had significantly shorter intervals between head raises than group foragers. Large group foragers were able to minimize their vulnerability to predation because at least one head was up during the entire foraging bout. Results of this study were consistent with the 'many-eyes, hypothesis that individuals in a foraging group can feed at a faster rate by reducing vigilance time as the number of individuals scanning for predators increases (Pulliam, H. R. 1973. J. Theor. Biol. 38: 419-422).Key Words: turkey vulture, vulture, vigilance, foraging behavior, group size, Indiana.
Department of Biology
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Geier, Jaclyn Leigh. "The Small Vulture: Essays, Encounters, and Awkward Flight Attempts." University of Akron / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=akron1428104096.

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Harris, Chad E. "Determination of species-specific primers for minisatellite variation analysis among and between populations of turkey vultures (Cathartes aura)." Virtual Press, 1999. http://liblink.bsu.edu/uhtbin/catkey/1138301.

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What is the genetic relatedness between and among populations of turkey vultures? By determining genetic relatedness, foraging and roosting behaviors of vultures may be better understood. Also as a result of this research, a system of determining genetic relationship will be developed ultimately allowing evolutionary behaviors of vulture populations including altruism and/or group selection to possibly be uncovered. The purpose of this research was to obtain sequence information in order to design species-specific primers for future comparisons of minisatellite variation among and between populations of turkey vultures. Two different methods for DNA isolation from blood were compared for their ability to produce high quantities of amplifiable DNA. The Rapid Method (Lahiri et al., 1993) yielded 5.6 ug of DNA from 500 ul ofblood with a purity ratio [A260/A2S0] of 0.926, while the protocol using IsocodeTM Stixyielded 4.3 ug DNA from 15 ul of blood and had a higher purity ratio of 1.365. Although both methods yielded amplifiable DNA, better amplification was attained using the IsocodeTM Stix, which was used for the rest of the project. The polymerase chain reaction, using RAPD (Random Amplified Polymorphic DNA) primers (Operon Technologies, Alameda, CA), was performed to obtain DNA regions containing minisatellites. Fragments generated by the OPB 08 primer hybridized to a pool of labeled minisatellite core sequences by Southern hybridization. This minisatellitecontaining fragment (800 bp) was excised from a gel and cloned into a plasmid vector (pCR®2.1-TOPO) producing a recombinant plasmid. The recombinant plasmids werereplicated in E. coli, plasmid DNA was isolated, and the cloned fragment was sequenced for determination of the flanking sequences around the minisatellite core. Multiple colonies (pTpvul 1-4) were picked from the cloning/transformation stages but only one brightly hybridizing colony was chosen for sequencing (pTpvul 1). Sequencing and sequencing analysis proved difficult and no minisatellite core sequences could be located. This could be attributed to extensive secondary structure in the DNA sequence or to recombination within the fragment when grown in E. coli. These flanking sequences, thought to be identical at each locus of the minisatellite in a genome, were to be used as species-specific primers in future minisatelhte-PCR DNA fingerprinting.
Department of Biology
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Möhler, Rainer. "Epistula de vulture : Untersuchungen zu einer organotherapeutischen Drogenmonographie des Fruhmittelalters /." Pattensen (Hannover) : H. Wellm, 1990. http://catalogue.bnf.fr/ark:/12148/cb35688947t.

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Sen, Bilgecan. "Breeding Ecology Of The Egyptian Vulture (neophron Percnopterus) Population In Beypazari." Master's thesis, METU, 2012. http://etd.lib.metu.edu.tr/upload/12615366/index.pdf.

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The aim of this study was to determine the habitat features affecting nest site selection and breeding success of the endangered Egyptian Vultures (Neophron percnopterus) breeding around the town of Beypazari. We searched and monitored nest sites in the study area (750 km2) for the years 2010 and 2011. The differences in terms of habitat features between nest sites and random points distributed along cliffs, and between successful and failed nest sites were investigated using both parametric approaches and machine learning methods with 21 habitat variables. The size of the Beypazari population of Egyptian Vultures was estimated to be 45 pairs. Seventeen nests in 2010 and 37 nests in 2011 were found and monitored. The breeding success of the population was estimated to be 100% in 2010 and 70% in 2011. Random Forests was the modeling technique with the highest accuracy and the modeling process chose 6 and 4 variables affecting nest site selection and breeding success of the species, respectively. Results showed that human impact was a potential factor governing the distribution of nest sites in the area and increased the probability of breeding failure as vultures clearly preferred to nest away from nearby villages, towns and roads, and nests on lower cliffs and nests that are close to the dump site (therefore the town center) was prone to failure. Utilization of elevation gradient and aspect showed trends similar to other populations of the species, with probability of nesting increasing at lower altitudes and for south facing cliffs. The overall results emphasize the potential conflict between human presence and the population of Egyptian Vultures in the area. Continuous monitoring of the nest sites and conservation activities towards raising public awareness are advised.
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Latteman, Holly M. "Black Vulture (Coragyps atratus) Range Expansion: An Example of Human Wildlife Conflict." Ohio University / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1556813177983405.

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Books on the topic "Vulture"

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Schafer, Susan. The vulture. New York: Dillon Press, 1994.

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Vulture. New York, NY: AV2 by Weigl, 2015.

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Vulture vomit. New York, NY: Gareth Stevens Publishing, 2015.

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1941-, Myers John J., ed. Space vulture. New York: Tor, 2009.

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Coggins, Mark. Vulture capital. Berkeley, Calif: Poltroon Press, 2002.

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artist, Ciregia Francesca, and Cassagrande Elena artist, eds. The vulture. Bath: Parragon, 2014.

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The vulture fund. New York: Dutton, 1996.

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King vulture: Poems. Fayetteville: University of Arkansas Press, 2005.

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The vulture fund. New York: Signet, 1997.

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The enraged vulture. Lusaka, Zambia: Zambia Educational Publishing House, 2004.

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Book chapters on the topic "Vulture"

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Olalquiaga, Celeste. "Vulture Culture." In Rethinking Borders, 85–100. London: Palgrave Macmillan UK, 1996. http://dx.doi.org/10.1007/978-1-349-12725-2_5.

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"Front Matter." In Vulture, i—vi. Brandeis University Press, 2020. http://dx.doi.org/10.2307/j.ctv153k6gg.1.

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"Hill of the Sacred Eagles." In Vulture, 105–20. Brandeis University Press, 2020. http://dx.doi.org/10.2307/j.ctv153k6gg.10.

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"On the Move." In Vulture, 122–39. Brandeis University Press, 2020. http://dx.doi.org/10.2307/j.ctv153k6gg.11.

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"Virginia Is for Vultures." In Vulture, 141–57. Brandeis University Press, 2020. http://dx.doi.org/10.2307/j.ctv153k6gg.12.

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"Battlefield Ghosts." In Vulture, 159–73. Brandeis University Press, 2020. http://dx.doi.org/10.2307/j.ctv153k6gg.13.

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"Welcome Back, Buzzards." In Vulture, 175–91. Brandeis University Press, 2020. http://dx.doi.org/10.2307/j.ctv153k6gg.14.

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"EPILOGUE." In Vulture, 193–203. Brandeis University Press, 2020. http://dx.doi.org/10.2307/j.ctv153k6gg.15.

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"AFTERWORD." In Vulture, 205–10. Brandeis University Press, 2020. http://dx.doi.org/10.2307/j.ctv153k6gg.16.

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"ACKNOWLEDGMENTS." In Vulture, 211–12. Brandeis University Press, 2020. http://dx.doi.org/10.2307/j.ctv153k6gg.17.

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Conference papers on the topic "Vulture"

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Markussen, Anders, Mikkel Rønne Jakobsen, and Kasper Hornbæk. "Vulture." In CHI '14: CHI Conference on Human Factors in Computing Systems. New York, NY, USA: ACM, 2014. http://dx.doi.org/10.1145/2556288.2556964.

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Sahu, Shreya, Arpan Jain, Ritu Tiwari, and Anupam Shukla. "Application of Egyptian Vulture Optimization in Speech Emotion Recognition." In The 6th Intl. Workshop on Spoken Language Technologies for Under-Resourced Languages. ISCA: ISCA, 2018. http://dx.doi.org/10.21437/sltu.2018-47.

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Quan, Andres, Charles Herrmann, and Hamdy Soliman. "Project Vulture: A Prototype for Using Drones in Search and Rescue Operations." In 2019 15th International Conference on Distributed Computing in Sensor Systems (DCOSS). IEEE, 2019. http://dx.doi.org/10.1109/dcoss.2019.00113.

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Liao, Xiayan, and Jinxiu Wang. "The Protection and Inheritance Research of Qiang People Folk House Architectural Vulture." In 6th International Conference on Social Science, Education and Humanities Research (SSEHR 2017). Paris, France: Atlantis Press, 2018. http://dx.doi.org/10.2991/ssehr-17.2018.89.

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Gangoso, Laura. "Long-Term Effects of Lead Poisoning on Bone Mineralization in Egyptian Vulture Neophron percnopterus." In Ingestion of Spent Lead Ammunition: Implications for Wildlife and Humans. The Peregrine Fund, 2009. http://dx.doi.org/10.4080/ilsa.2009.0214.

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Khan, Mohammad Ibrahim, Harish Datir, Subhadeep Sarkar, and Bjarne Rafaelsen. "DECIPHERING LOW RESISTIVITY PAY TO DERISK A COMMERCIAL DISCOVERY: CASE STUDY FROM THE NORWEGIAN SEA." In 2021 SPWLA 62nd Annual Logging Symposium Online. Society of Petrophysicists and Well Log Analysts, 2021. http://dx.doi.org/10.30632/spwla-2021-0006.

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The Cretaceous Cape Vulture prospect (Norwegian Sea, Norway) consisted of three Cretaceous sand levels: Cape Vulture Lower, Main, and Upper. The prospect was drilled in 2017, targeting seismic amplitude anomalies that represented a combination of reservoir facies and hydrocarbons. As the first well (6608/10-17S) proved hydrocarbons down to base reservoir in Cape Vulture Main and Upper, an appraisal well with two sidetracks were planned and drilled to determine the reservoir development, pressure communication and oil-water contact. A good understanding of the lateral variation within the reservoir was of importance to the technical economical evaluation of the discovery. The appraisal wells planned for a comprehensive coring and logging program. The main objectives were to reduce the uncertainty of estimated in place volumes by establishing the depth of the hydrocarbon-water contact, prove lateral pressure communication within each reservoir level, reduce the uncertainty of lateral and vertical reservoir distribution and quality, reduce the uncertainty of hydrocarbon saturation and understand the relationship between seismic amplitude anomalies and subsurface properties / fluids. The logging program included triaxial resistivity, nuclear spectroscopy, electrical images, nuclear magnetic resonance (NMR) complementing triple combo, followed by formation pressure measurements, and fluid sampling. The presence of clay minerals in varying amounts within the reservoirs depresses the resistivity measurement and leads to underestimation of the hydrocarbon saturation when using conventional Archie’s equation - a common petrophysical challenge in such conditions. The hydrocarbon saturation is an important parameter when calculating reserves and estimating whether a discovery is of commercial value. Hence, reducing the uncertainty span on hydrocarbon saturation (total and effective) and estimating the net pay thickness is critical. Using core data and advanced down-hole measurements to optimize a resistivity-based saturation model can reduce the uncertainty of the saturation estimates. Here we document the petrophysical evaluation of the data acquired, assessing heterolithic low resistivity pay with wireline log measurements combined with core data. Focus on the coring strategy, recommendations on sampling intervals for the core analysis, and key logging measurement requirements. The results show substantial improvements in the understanding of the hydrocarbon saturation, ultimately increasing in-place volume estimates. The integrated analysis, including NMR measurements, helps to delineate the fluid contacts, further reducing the uncertainty on the recoverable net pay thickness. The core data validate the independent log-based laminated sand analysis. This illustrates how an integrated approach combining core measurements, logs, and formation testing provide an accurate evaluation of low resistivity pay reservoirs, reducing the uncertainty in the technical economical evaluation.
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Owoeye, Kehinde. "Forecasting Avian Migration Patterns using a Deep Bidirectional RNN Augmented with an Auxiliary Task." In Twenty-Ninth International Joint Conference on Artificial Intelligence and Seventeenth Pacific Rim International Conference on Artificial Intelligence {IJCAI-PRICAI-20}. California: International Joint Conferences on Artificial Intelligence Organization, 2020. http://dx.doi.org/10.24963/ijcai.2020/604.

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Early forecasting of bird migration patterns has important application for example in reducing avian biodiversity loss. An estimated 100 million to 1 billion birds are known to die yearly during migration due to fatal collisions with human made infrastructures such as buildings, high tension lines, wind turbines and aircrafts thus raising a huge concern for conservationists. Building models that can forecast accurate migration patterns is therefore important to enable the optimal management of these critical infrastructures with the sole aim of reducing biodiversity loss. While previous works have largely focused on the task of forecasting migration intensities and the onset of just one migration state, predicting several migration states at even finer granularity is more useful towards optimally managing the infrastructures that causes these deaths. In this work, we consider the task of forecasting migration patterns of the popular Turkey Vulture (Cathartes aura) collected with the aid of satellite telemetry for multiple years at a resolution of one hour. We use a deep Bidirectional-GRU recurrent neural network augmented with an auxiliary task where the state information of one layer is used to initialise the other. Empirical results on a variety of experiments with our approach show we can accurately forecast migration up to one week in advance performing better than a variety of baselines.
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Vignali, Sergio, Daniel Hegglin, Raphael Arlettaz, and Veronika Braunisch. "Age and season-related habitat selection patterns of the bearded vulture (Gypaetus barbatus) in the Swiss Alps: a basis for predicting conflict-zones with wind energy construction." In 5th European Congress of Conservation Biology. Jyväskylä: Jyvaskyla University Open Science Centre, 2018. http://dx.doi.org/10.17011/conference/eccb2018/107368.

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Long, Katherine L., Donald Prothero, and V. J. P. Syverson. "STASIS IN RANCHO LA BREA BLACK VULTURES (CORAGYPS OCCIDENTALIS) OVER THE LAST GLACIAL-INTERGLACIAL CYCLE." In GSA Annual Meeting in Denver, Colorado, USA - 2016. Geological Society of America, 2016. http://dx.doi.org/10.1130/abs/2016am-277136.

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Akeredolu, Excellence, Andrew Routh, and Vasiliis Louca. "Effect of traditional use on Vulture's population in Lagos,Nigeria." In 5th European Congress of Conservation Biology. Jyväskylä: Jyvaskyla University Open Science Centre, 2018. http://dx.doi.org/10.17011/conference/eccb2018/107776.

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Reports on the topic "Vulture"

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Fry, Jereed N., and Steven E. Tutaj. A Business Case Analysis for the Vulture Program. Fort Belvoir, VA: Defense Technical Information Center, December 2010. http://dx.doi.org/10.21236/ada536326.

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Avery, Michael L., and Martin Lowney. Vultures. U.S. Department of Agriculture, Animal and Plant Health Inspection Service, October 2016. http://dx.doi.org/10.32747/2016.7008749.ws.

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Black and turkey vultures cause problems in several ways. The most common problems associated with vultures are structural damage, loss of aesthetic value and property use related to offensive odors and appearance, depredation to livestock and pets, and air traffic safety. Management of these diverse problems often can be addressed by targeting the source of the birds causing the problem, namely the roost where the birds spend the night. Often the roost itself is the problem, such as when birds roost on a communication tower and foul the equipment with their feces or when they roost in a residential area. Several methods are available for roost dispersal. Vultures are protected by the Migratory Bird Treaty Act, and are managed by the federal government. Vultures may be harassed without federal permits, but can be killed only after obtaining a Migratory Bird Depredation Permit from the U.S. Fish and Wildlife Service. State wildlife agencies may require state permits prior to killing migratory birds.
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Wallace, R. B., A. Reinaga, N. Piland, R. Piana, H. Vargas, R.-E. Zegarra, P. Alarcón, et al. Saving the Symbol of the Andes: A Range Wide Conservation Priority Setting Exercise for the Andean Condor (Vultur gryphus). Wildlife Conservation Society, 2020. http://dx.doi.org/10.19121/2020.report.39485.

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Wallace, R. B., A. Reinaga, N. Piland, R. Piana, H. Vargas, R.-E. Zegarra, P. Alarcón, et al. Protegiendo el Símbolo de los Andes: Ejercicio de Priorización a lo Largo del Rango de Distribución del Cóndor Andino (Vultur gryphus). Wildlife Conservation Society, 2020. http://dx.doi.org/10.19121/2020.report.39488.

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