Home Ranges and Movements of Non-Breeding Bearded Vultures Tracked by Satellite Telemetry in the Pyrenees

Gil, Juan Antonio; Báguena, Gerardo; Sánchez-Castilla, Emma; Antor, Ramón J.; Alcántara, Manuel; López‐López, Pascual

doi:10.13157/arla.61.2.2014.379

Cited by 23 publications

(22 citation statements)

References 23 publications

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“…Breeding individuals exploit smaller areas (K90 63 ± 59.5 km 2 ) in contrast to non-territorial individuals, which cover areas of 1818–11 616 km 2 depending on age-class (Table 4). In a previous study25 based on nine pre-adult individuals in the Pyrenees tracked with satellite telemetry (but not GPS technology), the MCP obtained ranges of 945–19 691 km 2 . A similar pattern26 was observed in the subspecies Gypaetus barbatus meridionalis in South Africa in which breeding individuals covered on average 95 ± 19 km 2 , whilst non-territorial individuals covered areas of 10 540–25 985 km 2 .…”

Section: Discussionmentioning

confidence: 92%

“…This study provides the first description and comparison of spatial and temporal ranging patterns of territorial and non-territorial Pyrenean bearded vultures tracked with GPS technology (see also refs 17 and 25). Such high-quality information will help optimize management and conservation actions for this threatened species in the context of the European metapopulation.…”

Section: Discussionmentioning

confidence: 99%

“…Thus, if we take into account the smaller home range sizes of territorial bearded vultures, the use of large buffers (i.e. 5 km) as a surrogate measure for SFS use would seem to be unsuitable25. As a result, new methods and measures for studying the use of SFS by bearded vultures and the effects they have on vulture movements still need to be explored further.…”

Section: Discussionmentioning

confidence: 99%

“…The difficulties inherent in the long-term monitoring of long-lived species greatly hinder the collection of reliable information on this subject. To date, information on the ranging behaviour of bearded vultures in the Pyrenees is limited to nine non-breeding individuals tracked using ARGOS satellite telemetry, which yielded 427 locations25, and a further nine non-breeding individuals monitored with GPS satellite telemetry17. Another study has been carried out on the subspecies Gypaetus barbatus meridionalis in South Africa, in which 18 individuals were monitored26.…”

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confidence: 99%

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Spatial and temporal movements in Pyrenean bearded vultures (Gypaetus barbatus): Integrating movement ecology into conservation practice

Margalida

Pérez‐García

Afonso³

et al. 2016

Sci Rep

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Understanding the movement of threatened species is important if we are to optimize management and conservation actions. Here, we describe the age and sex specific spatial and temporal ranging patterns of 19 bearded vultures Gypaetus barbatus tracked with GPS technology. Our findings suggest that spatial asymmetries are a consequence of breeding status and age-classes. Territorial individuals exploited home ranges of about 50 km2, while non-territorial birds used areas of around 10 000 km2 (with no seasonal differences). Mean daily movements differed between territorial (23.8 km) and non-territorial birds (46.1 km), and differences were also found between sexes in non-territorial birds. Daily maximum distances travelled per day also differed between territorial (8.2 km) and non-territorial individuals (26.5 km). Territorial females moved greater distances (12 km) than males (6.6 km). Taking into account high-use core areas (K20), Supplementary Feeding Sites (SFS) do not seem to play an important role in the use of space by bearded vultures. For non-territorial and territorial individuals, 54% and 46% of their home ranges (K90), respectively, were outside protected areas. Our findings will help develop guidelines for establishing priority areas based on spatial use, and also optimize management and conservation actions for this threatened species.

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Section: Discussionmentioning

confidence: 92%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

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Spatial and temporal movements in Pyrenean bearded vultures (Gypaetus barbatus): Integrating movement ecology into conservation practice

Margalida

Pérez‐García

Afonso³

et al. 2016

Sci Rep

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“…During the following months, they will wander over extensive areas, and they must learn to become self-sufficient, acquire flight skills, find food resources, and exploit them efficiently. This period is, therefore, critical for survival (Margalida et al 2013;Gil et al 2014;López-López et al 2014). Possibly as a consequence, we found that 2nd cy birds delayed start of primary moult until late in May, and only few birds were able to moult secondaries during the last month before the end of the moulting season, in winter.…”

Section: Discussionmentioning

confidence: 77%

The flight feather moult pattern of the bearded vulture (Gypaetus barbatus)

Zuberogoitia¹,

Gil²,

Martínez

et al. 2015

J Ornithol

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Moult is an extremely time-consuming and energy-demanding task for large birds. In addition, there is a trade-off between the time devoted to moulting and that invested in other activities such as breeding and/or territory exploration. Moreover, it takes a long time to grow a long feather in large birds, and large birds that need to fly while moulting cannot tolerate large gaps in the wing, but only one or two simultaneously growing feathers. As a consequence, large birds take several years to complete a full moult cycle, and they resume the moult process during suboptimal conditions. A clear example of this pattern is the Bearded Vulture (Gypaetus barbatus), which needs 2-3 years for changing all flight feathers. Here we describe the sequence, extent, and timing of moult of 124 Bearded Vultures in detail for the first time. We found that extent and timing of flight feather moult was different between age classes. Subadults (from 3rd to 5th calendar year)

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Application of GPS occurrence data to understand African white‐backed vulturesGyps africanusspatial home range overlaps

Zvidzai

Zengeya

Masocha

et al. 2022

Ecology and Evolution

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Understanding key overlap zones and habitats which are intensively shared by species in space and time is crucial as it provides vital information to inform spatial conservation with maximum benefits. The advent of high‐resolution GPS technologies associated with new analytical algorithms is revolutionizing studies underpinning species spatial and social interaction patterns within ecosystems. Here, using a robust home range estimation algorithm, the autocorrelated kernel density estimator (AKDE) equipped with an equally powerful home range overlap metric, the Bhattacharyya's coefficient (BC), we provide one of the first attempts to estimate and delineate spatial home range overlap zones for critically endangered African white‐backed vultures to inform conservation planning. Six vultures were captured in Hwange National Park using a modified cannon net system after which they were tagged and tracked with high‐resolution GPS backpacks. Overall, results suggested weaker average home range overlaps based on both the pooled data (0.38 ± 0.26), wet non‐breeding seasonal data (0.32 ± 0.23), and dry breeding season data (0.34 ± 0.28). Vultures 4, 5, and 6 consistently revealed higher home range overlaps across all the scales with values ranging between 0.60 and 0.99. Individual vultures showed consistence in space use patterns as suggested by high between‐season home range overlaps, an indication that they may be largely resident within the Hwange ecosystem. Importantly, we also demonstrate that home range overlapping geographic zones are all concentrated within the protected area of Hwange National Park. Our study provides some of the first results on African vulture home range overlaps and segregation patterns in the savanna ecosystem based on unbiased telemetry data and rigorous analytical algorithms. Such knowledge may provide vital insights for prioritizing conservation efforts of key geographic overlap zones to derive maximum conservation benefits especially when targeting wide‐ranging and critically endangered African white‐backed vultures. To this end, spatial overlap zones estimated here, although based on a small sample size, could provide a strong foundation upon which other downstream social and ecological questions can be explored further to expand our understanding on shared space use mechanisms among African vulture species.

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Home Ranges and Movements of Non-Breeding Bearded Vultures Tracked by Satellite Telemetry in the Pyrenees

Cited by 23 publications

References 23 publications

Spatial and temporal movements in Pyrenean bearded vultures (Gypaetus barbatus): Integrating movement ecology into conservation practice

Spatial and temporal movements in Pyrenean bearded vultures (Gypaetus barbatus): Integrating movement ecology into conservation practice

The flight feather moult pattern of the bearded vulture (Gypaetus barbatus)

Application of GPS occurrence data to understand African white‐backed vulturesGyps africanusspatial home range overlaps

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