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Griffon Vultures &Lpar;<I>Gyps Fulvus</I>&Rpar; Ingesting Bones At
SEPTEMBER1997 LETTERS 287 AravaipaCreek, Arizona. Almost immediatelyat leastsix Elf Owls beganvocalizing from dispersedlocations around our campsiteand at leastfour of them began making low passesat the Great Horned Owl. Before we could relocate the horned owl to a protectedenclosure, it wasstruck once in the head by an Elf Owl. Some nocturnal behaviorsmay not be well known or understood,not becausethey are rare, but becausethey are difficult to observe.This may changewith the increasedavailability of night vision equipment (P. Henson and J A Cooper 1994, Auk 111:1013-1018). Currently, observationsof nocturnal behaviorsare likely to be sporadicand anecdotal,and therefore unreported. Such information, however,may help in understandinga speciesbiology. For example, other researchershave observedgroup mobbing by Elf Owls (F.R. Gehlbach,pers. comm.; B.A. Millsap, pers. comm.), but there are no publishedreports of the behavior.Our observations,and thoseof other researchers, suggestthat Elf Owlswill join together in mobbing and that they can be physicallyaggressive when defending their nestsagainst predators. We thank A. Duerr, T.S. Estabrookand R.L. Spauldingfor assistingwith the observations.We alsothank T. Brush, ER. Gehlbach, R. Glinski, P. Hardy, B.A. Millsap, G. Proudfoot and H.A. Snyder for sharing their observational information concerning mobbing by small owls.This manuscriptbenefitted from the constructivereviews of ER. Gehlbach,C. Marti, B.A. Millsapand an anonymousreviewer.--Clint W. Boal, Brent D. Biblesand R. William Mannan, Schoolof RenewableNatural Resources,University of Arizona, Tucson,AZ 85721 U.S•. j. RaptorRes. 31 (3):287-288 ¸ 1997 The Raptor ResearchFoundation, Inc. GRIFFONVULTURES (GYPS FULVUS) INGESTING BONES AT THE OSSUARIESOF BEARDEDVULTURES ( GYPAETUSBAR•ATUS) Some African vulturesovercome the calcium deficiencyin their diets by ingestingbone fragments,and are depen- dent on the presenceof largepredators to supplythem (Mundy and Ledger 1976, S. -
BEARDED VULTURE POPULATION and HABITAT VIABILITY ASSESSMENT (Gypaetus Barbatus Meridionalis)
BEARDED VULTURE POPULATION AND HABITAT VIABILITY ASSESSMENT (Gypaetus barbatus meridionalis) Sterkfontein Dam, Harrismith, Free State Province, South Africa 6 - 10 March 2006 BEARDED VULTURE (Gypaetus barbatus meridionalis) POPULATION AND HABITAT VIABILITY ASSESSMENT IN SOUTHERN AFRICA 6 - 10 March 2006 WORKSHOP REPORT Convened by: CONSERVATION BREEDING SPECIALIST GROUP SOUTHERN AFRICA ENDANGERED WILDLIFE TRUST EZEMVELO KWAZULU-NATAL WILDLIFE Sponsored by: Maloti Drakensberg Transfrontier Project In collaboration with THE CONSERVATION BREEDING SPECIALIST GROUP (CBSG) OF THE IUCN SPECIES SURVIVAL COMMISSION Population and Habitat Viability Assessment: Bearded Vulture (Gypaetus barbatus meridionalis) 1 © Conservation Breeding Specialist Group (CBSG-SSC / IUCN) and the Endangered Wildlife Trust. The copyright of the report serves to protect the Conservation Breeding Specialist Group workshop process from any unauthorised use. Krüger, S., Piper, S., Rushworth, I., Botha, A., Daly, B., Allan, D., Jenkins, A., Burden, D. and Friedmann, Y. (editors). 2006. Bearded Vulture (Gypaetus barbatus meridionalis) Population and Habitat Viability Assessment Workshop Report. Conservation Breeding Specialist Group (SSC / IUCN) / CBSG Southern Africa. Endangered Wildlife Trust, Johannesburg. The CBSG, SSC and IUCN encourage workshops and other fora for the consideration and analysis of issues related to conservation, and believe that reports of these meetings are most useful when broadly disseminated. The opinions and recommendations expressed in this report -
Lappet-Faced Vultures Studies at Mahazat As Syed Protected
Status of Vultures in the Middle East with detailed studies of Lappet-faced and Griffon Vultures in Saudi Arabia Mohammed Shobrak Biology Department, Taif University, Saudi Wildlife Authority, Saudi Arabia Content of the Presentation •Vultures in the Middle East and Arabian Peninsula • Status & Trend & • Griffon Vultures • Lappet-faced Vultures Studies in KSA •Threats •Conclusion and Recommendations Vultures Recoded in the Middle East and the Arabian Peninsula ØBearded Vulture Gypaetus barbatus (Rare Breeding) ØEgyptian Vulture Neophron percnopterus (Breeding) ØGriffon Vulture Gyps fulvus (Breeding) ØLappet-faced Vulture Torgos tracheliotus (Breeding) ØCinereous Vulture Aegypius monachus (the majority are Migratory) ØRüppell’s Vulture Gpys rueppellii (Meinertzhagen 1945) The majority of the Middle Eastern populations are migratory (winter visitor and passing migrants), with small breeding populations in Iran and Turkey. Cinereous Vulture is a winter visitor to the Arabian Peninsula, concentrated at northern, central and eastern part of the Arabian Peninsula. IUCN Red List Species Status at the Population Status Scientific Name Status International (Trend) Global / Reginal Agreement Aegypius monachus CITES II, CMS II, EU WV (Linnaeus, 1758) NT/NT WTR (A), Raptor MoU 1 Decreasing Middle Eastern populations extend from SW Iran into much of Turkey, with more isolated populations in Yemen and SW Saudi Arabia The bearded vulture was a rare resident and now probably no longer breeds in Saudi Arabia, and probably in Yemen (50 breeding pairs were -
Vulture Msap)
MULTI-SPECIES ACTION PLAN TO CONSERVE AFRICAN-EURASIAN VULTURES (VULTURE MSAP) CMS Raptors MOU Technical Publication No. 5 CMS Technical Series No. xx MULTI-SPECIES ACTION PLAN TO CONSERVE AFRICAN-EURASIAN VULTURES (VULTURE MSAP) CMS Raptors MOU Technical Publication No. 5 CMS Technical Series No. xx Overall project management Nick P. Williams, CMS Raptors MOU Head of the Coordinating Unit [email protected] Jenny Renell, CMS Raptors MOU Associate Programme Officer [email protected] Compiled by André Botha, Endangered Wildlife Trust Overarching Coordinator: Multi-species Action Plan to conserve African-Eurasian Vultures [email protected] Jovan Andevski, Vulture Conservation Foundation European Regional Coordinator: Multi-species Action Plan to conserve African-Eurasian Vultures [email protected] Chris Bowden, Royal Society for the Protection of Birds Asian Regional Coordinator: Multi-species Action Plan to conserve African-Eurasian Vultures [email protected] Masumi Gudka, BirdLife International African Regional Coordinator: Multi-species Action Plan to conserve African-Eurasian Vultures [email protected] Roger Safford, BirdLife International Senior Programme Manager: Preventing Extinctions [email protected] Nick P. Williams, CMS Raptors MOU Head of the Coordinating Unit [email protected] Technical support Roger Safford, BirdLife International José Tavares, Vulture Conservation Foundation Regional Workshop Facilitators Africa - Chris Bowden, Royal Society for the Protection of Birds Europe – Boris Barov, BirdLife International Asia and Middle East - José Tavares, Vulture Conservation Foundation Overarching Workshop Chair Fernando Spina, Chair of the CMS Scientific Council Design and layout Tris Allinson, BirdLife International 2 Multi-species Action Plan to Conserve African-Eurasian Vultures (Vulture MsAP) Contributors Lists of participants at the five workshops and of other contributors can be found in Annex 1. -
NE Spain): Management Implications A
Animal Biodiversity and Conservation 30.2 (2007) 189 Factors influencing the breeding density of Bearded Vultures, Egyptian Vultures and Eurasian Griffon Vultures in Catalonia (NE Spain): management implications A. Margalida, D. García & A. Cortés–Avizanda Margalida, A., García, D. & Cortés–Avizanda, A., 2007. Factors influencing the breeding density of Bearded Vultures, Egyptian Vultures and Eurasian Griffon Vultures in Catalonia (NE Spain): management implica- tions. Animal Biodiversity and Conservation, 30.2: 189–200. Abstract Factors influencing the breeding density of Bearded Vultures, Egyptian Vultures and Eurasian Griffon Vultures in Catalonia (NE Spain): management implications.— Using multivariate analyses we examined differences in breeding density of the Bearded Vulture Gypaetus barbatus, the Eurasian Griffon Vulture Gyps fulvus and the Egyptian Vulture Neophron percnopterus in NE Spain (Catalonia) in relation to trophic, orographic–landscape and anthropic variables. Sampling units used were regional divisions (comarques). High density of Bearded Vulture was principally linked to areas with scant vegetation and low human population density. In contrast, high densities of both the Egyptian and Eurasian Griffon Vultures were associated with availability of trophic resources (sheep and goats). Positive effects were detected in relation to low density of inhabitants (Egyptian Vulture) and altitudes between 1,000–2,000 m and landscape with low tree cover (Eurasian Griffon Vulture). The Bearded Vulture seemed to be the most selective species in relation to environmental characteristics while the Eurasian Griffon and the Egyptian Vultures displayed a higher degree of ecological plasticity. Future conservation actions should bear these results in mind in order to optimise management. Food resources from extensive livestock farming, in particular, seem fundamental for the conservation of scavenger species. -
The Decline of an Urban Hooded Vulture Necrosyrtes Monachus Population in Dakar, Senegal, Over 50 Years
Ostrich Journal of African Ornithology ISSN: 0030-6525 (Print) 1727-947X (Online) Journal homepage: http://www.tandfonline.com/loi/tost20 The decline of an urban Hooded Vulture Necrosyrtes monachus population in Dakar, Senegal, over 50 years Wim C Mullié, François-Xavier Couzi, Moussa Sega Diop, Bram Piot, Theo Peters, Pierre A Reynaud & Jean-Marc Thiollay To cite this article: Wim C Mullié, François-Xavier Couzi, Moussa Sega Diop, Bram Piot, Theo Peters, Pierre A Reynaud & Jean-Marc Thiollay (2017) The decline of an urban Hooded Vulture Necrosyrtes monachus population in Dakar, Senegal, over 50 years, Ostrich, 88:2, 131-138, DOI: 10.2989/00306525.2017.1333538 To link to this article: http://dx.doi.org/10.2989/00306525.2017.1333538 View supplementary material Published online: 20 Jul 2017. Submit your article to this journal Article views: 11 View related articles View Crossmark data Full Terms & Conditions of access and use can be found at http://www.tandfonline.com/action/journalInformation?journalCode=tost20 Download by: [2.83.93.12] Date: 17 August 2017, At: 00:02 Ostrich 2017, 88(2): 131–138 Copyright © NISC (Pty) Ltd Printed in South Africa — All rights reserved OSTRICH ISSN 0030–6525 EISSN 1727-947X http://dx.doi.org/10.2989/00306525.2017.1333538 The decline of an urban Hooded Vulture Necrosyrtes monachus population in Dakar, Senegal, over 50 years§ Wim C Mullié1*, François-Xavier Couzi2, Moussa Sega Diop3, Bram Piot4, Theo Peters5, Pierre A Reynaud6 and Jean-Marc Thiollay7 1 BP 45590, 10700 Dakar-Fann, Senegal 2 Société d’Etudes Ornithologiques de la Réunion, Saint André, Île de la Réunion, France 3 AfriWet Consultants, Dakar-Thiaroye, Senegal 4 Cité Ndiatte Almadies, Ngor, Dakar, Senegal 5 Royal Netherlands Embassy, Dakar, Senegal 6 275 Rue Robert Schuman, 83000 Toulon, France 7 2 Rue de la Rivière, 10220 Rouilly Sacey, France * Corresponding author, email: [email protected] As in many West African cities, in Dakar Hooded Vultures Necrosyrtes monachus have always been characteristic urban scavengers. -
Recent Literature and Book Reviews
Vulture News 69 November 2015 RECENT LITERATURE AND BOOK REVIEWS P.J. Mundy BAMFORD, A. J., MONADJEM, A., DIEKMANN, M. & HARDY, I. C.W. (2009). Development of non-explosive-based methods for mass capture of vultures. South African Journal of Wildlife Research 39: 202-208. Investigated methods of launching nets, powered by black powder, detonators, elastic, and compressed air, and a walk-in trap. The last proved most effective at capturing birds, needed no licence, but took a long time to construct and of course was barely portable. (email for Monadjem: [email protected]) BIRD, J. P. & BLACKBURN, T. M. (2011). Observations of large raptors in northeast Sudan. Scopus 31: 19-27. From a 430km transect (Atbara to Port Sudan) and other ad hoc observations, in January 2010, three species of vulture were seen. Thirty Egyptian Vultures on the transect, counts of 21 and 24 Lappet-faced Vultures at a carcass and one Hooded Vulture, were noted. (email: [email protected]) BREWSTER, C. A & TYLER, S. J. (2012). Summary of category B records. Babbler 57: 45-47. Many sightings are listed for the Cape, Lappet-faced, White-headed and Hooded Vultures, but no ages. In the Tswapong Hills, no nests of the Cape Vulture were seen at Lerala, but 76 were seen at Moremi Gorge. On p. 57 many sightings are listed of the White-backed Vulture, from singles up to groups of about 70. c ( /o BLB, Box 26691, Gaborone) 51 Vulture News 69 November 2015 BRUCE-MILLER, I. (2008). Martial Eagle Polemaetus bellicosus apparently killing White-headed Vulture Trigonoceps occipitalis. -
Trade of Threatened Vultures and Other Raptors for Fetish and Bushmeat in West and Central Africa
Trade of threatened vultures and other raptors for fetish and bushmeat in West and Central Africa R. BUIJ,G.NIKOLAUS,R.WHYTOCK,D.J.INGRAM and D . O GADA Abstract Diurnal raptors have declined significantly in Introduction western Africa since the s. To evaluate the impact of traditional medicine and bushmeat trade on raptors, we ex- ildlife is exploited throughout West and Central amined carcasses offered at markets at sites (– stands WAfrica (Martin, ). The trade in bushmeat (wild- per site) in countries in western Africa during –. sourced meat) has been recognized as having a negative im- Black kite Milvus migrans andhoodedvultureNecrosyrtes pact on wildlife populations in forests and savannahs monachus together accounted for %of, carcasses com- (Njiforti, ; Fa et al., ; Lindsey et al., ), and it . prising species. Twenty-seven percent of carcasses were of is estimated billion kg of wild animal meat is traded an- species categorized as Near Threatened, Vulnerable or nually in Central Africa (Wilkie & Carpenter, ). In add- Endangered on the IUCN Red List. Common species were ition to being exploited for bushmeat, many animals are traded more frequently than rarer species, as were species hunted and traded specifically for use in traditional medi- with frequent scavenging behaviour (vs non-scavenging), gen- cine, also known as wudu, juju or fetish (Adeola, ). eralist or savannah habitat use (vs forest), and an Afrotropical The use of wildlife items for the treatment of a range of (vs Palearctic) breeding range. Large Afrotropical vultures physical and mental diseases, or to bring good fortune, were recorded in the highest absolute and relative numbers has been reported in almost every country in West and in Nigeria, whereas in Central Africa, palm-nut vultures Central Africa. -
Function and Occurrence of Facial Flushing in Birds
Comparative Biochemistry and Physiology, Part A 143 (2006) 78–84 www.elsevier.com/locate/cbpa Function and occurrence of facial flushing in birds Juan José Negro a,⁎, José Hernán Sarasola a, Fernando Fariñas b, Irene Zorrilla b a Department of Applied Biology, Estación Biológica de Doñana, CSIC, Avda. de María Luisa s/n, Pabellón del Perú, 41013 Sevilla, Spain b Instituto Andaluz de Patología y Microbiología-IAMA, C/Domingo Lozano 60-62, 29010 Málaga, Spain Received 1 June 2005; received in revised form 21 October 2005; accepted 22 October 2005 Available online 5 December 2005 Abstract So far overlooked as a pigment involved in visual communication, the haemoglobin contained in the blood of all birds is responsible for the red flushing colours in bare skin areas of some species. Our aim has been twofold: (1) to study sub-epidermical adaptations for blood circulation in two flushing species: the crested caracara (Polyborus plancus) and the hooded vulture (Necrosyrtes monachus), and (2) to provide the first compilation of avian species with flushing skin. The bare facial skin of both the caracara and the hooded vulture contains a highly vascularised tissue under the epidermis that may be filled with blood and would thus produce red skin colours. In contrast, feathered areas of the head show very few vessels immersed in connective tissue and have no potential for colour changes. Species with flushing colours are few but phylogenetically diverse, as they belong to 12 different avian orders and at least 20 families. The majority are dark-coloured, large-sized species living in hot environments that may have originally evolved highly vascularised skin patches for thermoregulation. -
Raptors in the East African Tropics and Western Indian Ocean Islands: State of Ecological Knowledge and Conservation Status
j. RaptorRes. 32(1):28-39 ¸ 1998 The Raptor ResearchFoundation, Inc. RAPTORS IN THE EAST AFRICAN TROPICS AND WESTERN INDIAN OCEAN ISLANDS: STATE OF ECOLOGICAL KNOWLEDGE AND CONSERVATION STATUS MUNIR VIRANI 1 AND RICHARD T. WATSON ThePeregrine Fund, Inc., 566 WestFlying Hawk Lane, Boise,1D 83709 U.S.A. ABSTRACT.--Fromour reviewof articlespublished on diurnal and nocturnal birds of prey occurringin Africa and the western Indian Ocean islands,we found most of the information on their breeding biology comesfrom subtropicalsouthern Africa. The number of published papers from the eastAfrican tropics declined after 1980 while those from subtropicalsouthern Africa increased.Based on our KnoM- edge Rating Scale (KRS), only 6.3% of breeding raptorsin the eastAfrican tropicsand 13.6% of the raptorsof the Indian Ocean islandscan be consideredWell Known,while the majority,60.8% in main- land east Africa and 72.7% in the Indian Ocean islands, are rated Unknown. Human-caused habitat alteration resultingfrom overgrazingby livestockand impactsof cultivationare the main threatsfacing raptors in the east African tropics, while clearing of foreststhrough slash-and-burnmethods is most important in the Indian Ocean islands.We describeconservation recommendations, list priorityspecies for study,and list areasof ecologicalunderstanding that need to be improved. I•y WORDS: Conservation;east Africa; ecology; western Indian Ocean;islands; priorities; raptors; research. Aves rapacesen los tropicos del este de Africa yen islasal oeste del Oc•ano Indico: estado del cono- cimiento eco16gicoy de su conservacitn RESUMEN.--Denuestra recopilacitn de articulospublicados sobre aves rapaces diurnas y nocturnasque se encuentran en Africa yen las islasal oeste del Octano Indico, encontramosque la mayoriade la informaci6n sobre aves rapacesresidentes se origina en la regi6n subtropical del sur de Africa. -
Food of the Egyptian Vulture (Neophron Percnopterus) in Biscay Potrava Supa Mrchožravého (Neophron Percnopterus) V Biskajské Oblasti
BUTEO 14 (2005): 23-29 Food of the Egyptian Vulture (Neophron percnopterus) in Biscay Potrava supa mrchožravého (Neophron percnopterus) v Biskajské oblasti HIDALGO S. (1), ZABALA J. (1,2), ZUBEROGOITIA I. (1,2,3), AZKONA A. (1) & CASTILLO I. (1) (1) Sociedad Para el Estudio de las Aves Rapaces: C/ Karl Marx, 15, 4ºF, 48950 Erandio, Bizkaia, Spain; e-mail: [email protected] (2) Bº Lanbarketa C/ Lepanto, 3, 7ºC 48480 Arrigorriaga, Bizkaia, Basque Country, Spain. (3) E.M ICARUS S. L: C/ Pintor Sorolla 6. 1ºC, 26007 Logroño, Spain; e-mail: inigo.zubero [email protected] ABSTRACT. We studied the diet of the Egyptian Vulture in Biscay, northern Iberian Peninsula, between 2000-2003. We monitored adults in territories, searched for nests, and collected food remains in nest and platform. We collected and identified a total of 143 prey remains, and classified them into 32 categories. 51.1% of prey where birds, whilst mammals accounted for 48.3%. Regarding source 41.3% of prey where wild birds and 9.8% domestic poultry. The bulk of mammals, 29.4%, had its source in domestic species, and wild mammals only accounted for 14% of prey remains. This variability in the diet is due to the capability of the species to exploit different food resources. Our study, along with several other works, points out the importance of feeding points and their management for the persistence and productivity of the species. INTRODUCTION The Egyptian Vulture (Neophron percnopterus) is a medium sized migratory scav- enger raptor, whose nesting area spreads over southern Europe, north western Africa and some areas of near Asia and India (CRAMP & SIMMONS 1998). -
Visual Field Shape and Foraging Ecology in Diurnal Raptors
Visual field shape and foraging ecology in diurnal raptors Simon Potier, Olivier Duriez, Gregory Cunningham, Vincent Bonhomme, Colleen O’Rourke, Esteban Fernández-Juricic, Francesco Bonadonna To cite this version: Simon Potier, Olivier Duriez, Gregory Cunningham, Vincent Bonhomme, Colleen O’Rourke, et al.. Visual field shape and foraging ecology in diurnal raptors. Journal of Experimental Biology, Cambridge University Press, 2018, 221 (14), pp.jeb177295. 10.1242/jeb.177295. hal-03132841 HAL Id: hal-03132841 https://hal.archives-ouvertes.fr/hal-03132841 Submitted on 5 Feb 2021 HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. © 2018. Published by The Company of Biologists Ltd | Journal of Experimental Biology (2018) 221, jeb177295. doi:10.1242/jeb.177295 RESEARCH ARTICLE Visual field shape and foraging ecology in diurnal raptors Simon Potier1,2,*, Olivier Duriez1, Gregory B. Cunningham3, Vincent Bonhomme4, Colleen O’Rourke5, Esteban Fernández-Juricic6 and Francesco Bonadonna1 ABSTRACT separate niches (Safi and Siemers, 2010). Interspecific differences Birds, particularly raptors, are believed to forage primarily using visual in the visual capacities of birds (Fernández-Juricic, 2012; Jones cues. However, raptor foraging tactics are highly diverse – from et al., 2007; Martin, 2014; Moore et al., 2016; Rochon-Duvigneaud, chasing mobile prey to scavenging – which may reflect adaptations of 1943; Walls, 1942) also allow species to respond differently to the their visual systems.