First description of migration and wintering of adult Egyptian Vultures <i>Neophron percnopterus</i> tracked by GPS satellite telemetry

García‐Ripollés, Clara; López‐López, Pascual; Urios, Vicente

doi:10.1080/00063650903505762

Cited by 67 publications

(70 citation statements)

References 8 publications

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“…Eurasian Griffon Vultures combine soaring on thermals to gain height, alternating with periods of gliding for displacing (Spaar 1997). The use of thermals has also been reported to account for higher flying activity at midday in a number of raptor species (Spaar 1997, García-Ripollés et al 2010.…”

Section: Discussionmentioning

confidence: 99%

“…Six birds were captured on April 2007 and two birds were captured on October 2009 in a vulture restaurant (40°33'N, 0°13'W) located in the Cinctorres district (Castellón province, East of Spain), using a remotely activated cage built ad hoc. In all cases, a Microwave Telemetry's 70g solar-powered GPS-PTT was fixed to their backs using a Teflon harness sewed with a cotton ribbon to allow birds to lose the harness after the end of the PTT's life cycle (García-Ripollés et al 2010). The PTTs were programmed to record one GPS position per hour from 07:00 to 21:00 hours (local time) for the whole annual period.…”

Section: Methodsmentioning

confidence: 99%

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Ranging Behaviour of Non-Breeding Eurasian Griffon VulturesGyps fulvus: A GPS-Telemetry Study

2011

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García-Ripollés C., López-López P., Urios V. 2011. Ranging behaviour of non-breeding Eurasian Griffon Vultures Gyps fulvus: a GPS-telemetry study. Acta Ornithol. 46: 127-134. DOI 10.3161/000164511X625892 Abstract. Little is known about the spatial ecology and ranging behaviour of vultures in Europe. In this paper we used GPS satellite telemetry to assess home-ranges of eight non-breeding Eurasian Griffon Vultures in Spain, trying to answer the main questions on when (i.e. the time of the day), how far (i.e. hourly and daily distances) and where vultures range (i.e. home-range size). Results indicated that vultures ranged extensively mainly in areas where traditional stock-raising practices and pasturing were still common, also including some vulture restaurants, which were visited occasionally. Eurasian Griffon Vultures concentrated their hourly and daily movements in the middle of the day, when the availability of thermal updrafts was higher, favouring foraging activities. The overall foraging range, calculated as Minimum Convex Polygon (MCP) (7419 km 2 ), or as 95% and 50% kernel contours (4078 km 2 and 489 km 2 , respectively), was higher than those reported in previous studies. The precise knowledge of the ranging behaviour and spatial parameters is particularly important for the conservation of scavenger species inhabiting human-dominated areas where human activities may jeopardize vulture populations in the long term.

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Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Ranging Behaviour of Non-Breeding Eurasian Griffon VulturesGyps fulvus: A GPS-Telemetry Study

2011

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“…The wintering home range used by the A. clanga was only 10 km 2 , which is much smaller than suspected (without satellite tracking) for the breeding home range (Cramp & Simmons 1980, del Hoyo et al 1994. The tracked eagle showed a preference for marshes, wetlands and coastal lagoons where its prey, such as coots, rats and waders, is abundant.…”

Section: Discussionmentioning

confidence: 97%

“…The greater spotted eagle Aquila clanga is a migratory medium-large raptor that breeds in a fragmented range across temperate Eurasia and winters in Southern Eurasia and Northern Africa (del Hoyo et al 1994). In Europe it winters primarily in Greece and western Turkey, and to a lesser extent in Crete, Macedonia, Croatia and Italy (del Hoyo et al 1994, Iankov et al 1996, Maciorowski et al 2014. Only a few wintering eagles occur more westerly (Iankov et al 1996, Barrientos & Bolonio 2002.…”

Section: Introductionmentioning

confidence: 99%

Winter ranging behaviour of a greater spotted eagle (Aquila clanga) in southeast Spain during four consecutive years

Pérez‐García

Sellis²,

Väli

2014

Slovak Raptor Journal

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Knowing the winter behaviour is essential for deciding on conservation strategies for threatened migratory species such as the greater spotted eagle (Aquila clanga). Fidelity and inter-annual variation in winter home range of an Estonian greater spotted eagle were studied during the first four years of its life by means of GPS satellite telemetry in south-eastern Spain. Results show the eagle exploited a small area (12.7 km 2 , 95% kernel) with high inter-annual fidelity during all winter stages. The A. clanga preferred marshes and water bodies and avoided irrigated crops and urban areas. Waterfowl hunting did not show any effect on the spatial pattern of the eagle's behaviour, although water level management in reservoirs could influence their use by the A. clanga. Our study highlights that the wintering home range may be limited to a small suitable habitat patch where human activities, especially water reservoir management, should be regulated.Abstrakt: Nevyhnutným predpokladom efektívnych ochranárskych opatrení je poznanie zimného správania ohrozeného migrujúceho druhu, akým je orol hrubozobý (Aquila clanga). Fidelita a medziročná variabilita charakteristík zimného okrsku jedinca orla hrubozobého pochádzajúceho z Estónska sa sledovala počas prvých štyroch rokov jeho života pomocou GPS-satelitnej telemetrie v juhovýchodnom Španielsku. Z výsledkov vyplýva, že orol využíval počas zimy len malé územie (12,7 km 2 , 95 %-ný kernel) s vysokou medziročnou fidelitou. A. clanga preferoval mokrade a vodné plochy a vyhýbal sa zavlažovaným poľným kultúram a urbanizovaným územiam. Poľovačky na vodné vtáctvo neovplyvnili charakter priestorového správania orla, avšak výška vodnej hladiny vodných rezervoárov mala vplyv na ich využitie sledovaným jedincom. Z výsledkov našej štúdie možno zdôrazniť, že zimný domovský okrsok môže byť priestorovo obmedzený na malé plochy vhodného habitatu, kde by ľudská čin-nosť, najmä manažment vodných rezervoárov, mala byť regulovaná.

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“…Data about dispersal rates for both species were still scarce, and hence populations were modelled as isolated, even though it is likely that some birds could disperse among populations. In fact, Egyptian Vultures are highly phylopatric according to observations of tagged birds, ringing recovery data (Grande 2006) and recent GPS satellite telemetry information (García-Ripollés et al 2010). Data on the spatial structure of Eurasian Griffon Vultures were also insufficient although juvenile and subadult birds could behave as dispersers and information about recruitment of this species was still scarce.…”

Section: Model Parameter Inputmentioning

confidence: 98%

Integrating effects of supplementary feeding, poisoning, pollutant ingestion and wind farms of two vulture species in Spain using a population viability analysis

García‐Ripollés

López‐López

2011

J Ornithol

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Population viability analyses (PVAs) are a useful technique in risk-assessment studies aimed at determining which demographic parameters are most influential in population persistence. Here, we incorporate demographic and environmental stochasticity in the construction of individual-based models integrating the effects of different scenarios in a PVA of the Eurasian Griffon Vulture (Gyps fulvus) and the endangered Egyptian Vulture (Neophron percnopterus) in Spain. Scenarios were based on reasonable options of population management, including effects of supplementary feeding (decreasing mortality and increasing fecundity), extensive wind farm development (increasing mortality), and catastrophic events such as poisoning (decreasing fecundity and survival) or pollutant ingestion (decreasing fecundity but no effect on survival). Our results show that those measures affecting survival show higher negative effects on population growth rate than those affecting fecundity. The outcomes were different and highly depend on the initial conditions and the species considered, with stronger negative effects on Egyptian Vulture populations. For both species, under similar conditions, the effects of massive poisoning, even occurring at low time frequency, had stronger negative consequences in population trends than the pollutant accumulation, or other actions affecting survival, such as installation of wind farms. Measures aimed at improving survival and fecundity such as supplementary feeding at vulture restaurants give rise to positive population trends. The establishment of management actions aimed at improving the birds' survival and increasing breeding success will probably boost the scavengers' populations into an upward trend, which is particularly important in the case of the endangered Egyptian Vulture. Keywords Elasticity analysis Á Gyps fulvus Á Neophron percnopterus Á PVA Á Vortex software Zusammenfassung Population Viability Analysis (PVA) ist eine nützliche Methode in Risikobewertungsstudien, die darauf abzielt, zu ermitteln, welche demographischen Parameter für das Fortbestehen von Populationen am einflussreichsten sind. Hier berücksichtigen wir demographische Stochastizität und Umweltstochastizität bei der Konstruktion individuenbasierter Modelle, welche die Effekte verschiedener Szenarien in eine PVA für den Gänsegeier (Gyps fulvus) und den stark gefährdeten Schmutzgeier (Neophron percnopterus) in Spanien integrieren. Die Szenarien beruhen auf angemessenen Optionen von Populationsmanagement, welche die Effekte von Zufüttern (erniedrigt die Mortalität und erhöht die Fruchtbarkeit), großflächigem Bau von Windenergieparks (erhöht die Mortalität) und katastrophalen Ereignissen wie Vergiftung (erniedrigt die Fruchtbarkeit und das Communicated by F. Bairlein. Electronic supplementary material The online version of this article (Ü berleben) oder Schadstoffaufnahme (erniedrigt die Fruchtbarkeit, aber hat keinen Effekt auf das Ü berleben) einschließen. Unsere Ergebnisse zeigen, dass diejenigen Maße, die das Ü berleben be...

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First description of migration and wintering of adult Egyptian Vultures Neophron percnopterus tracked by GPS satellite telemetry

Cited by 67 publications

References 8 publications

Ranging Behaviour of Non-Breeding Eurasian Griffon VulturesGyps fulvus: A GPS-Telemetry Study

Ranging Behaviour of Non-Breeding Eurasian Griffon VulturesGyps fulvus: A GPS-Telemetry Study

Winter ranging behaviour of a greater spotted eagle (Aquila clanga) in southeast Spain during four consecutive years

Integrating effects of supplementary feeding, poisoning, pollutant ingestion and wind farms of two vulture species in Spain using a population viability analysis

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