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Conflicts between Lesser Kestrel Conservation and European Agricultural Policies as Identif ied by Habitat Use Analyses
European pseudo-steppes have suffered from extensive changes in agricultural practices during the past decades with the disappearance of field margins and fallow systems and the increase of biocideExpand
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Density-dependent productivity depression in Pyrenean Bearded Vultures: implications for conservation.
The main objective of many conservation programs is to increase population size by improving a species' survival and reproduction. However, density dependence of demographic parameters may confoundExpand
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Food resource utilisation by the Magellanic penguin evaluated through stable-isotope analysis: segregation by sex and age and influence on offspring quality
We used stable-isotope analysis (SIA) to evaluate sources of variation in the diet of and prey selection by Magellanic penguins Spheniscus magellanicus breeding on the Argentinean Patagonia coast.Expand
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Large scale risk-assessment of wind-farms on population viability of a globally endangered long-lived raptor
Wind-farms receive public and governmental support as an alternative energy source mitigating air pol- lution. However, they can have adverse effects on wildlife, particularly through collision withExpand
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Long-term effects of lead poisoning on bone mineralization in vultures exposed to ammunition sources.
Long-lived species are particularly susceptible to bioaccumulation of lead in bone tissues. In this paper we gain insights into the sublethal effects of lead contamination on Egyptian vulturesExpand
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Conservation status and limiting factors in the endangered population of Egyptian vulture (Neophron percnopterus) in the Canary Islands
Egyptian vulture populations have decreased sharply in the Western Palearctic; island populations are almost extinct in the Mediterranean and the Macaronesian regions. In the Canary archipelago, theExpand
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Factors affecting breeding dispersal in the facultatively colonial lesser kestrel: individual experience vs. conspecific cues
Summary 1 The role of individual experience vs. the use of conspecific cues on breeding dispersal decisions have seldom been determined in colonial birds. We studied causes of breedingExpand
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Managing supplementary feeding for avian scavengers: Guidelines for optimal design using ecological criteria
Current European sanitary laws are promoting the concentration of domestic livestock carcasses in limited locations called ‘vulture restaurants’ or supplementary feeding stations in order toExpand
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Foraging habitat selection, land-use changes and population decline in the lesser kestrel Falco naumanni
The selection of foraging habitats by nine radio-tagged adult lesser kestrels (Falco naumanni) breeding in one colony in southern Spain, was studied in 1989 and 1990. Despite individual differencesExpand
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Causes and consequences of territory change and breeding dispersal distance in the black kite
Factors affecting individual variation in between-year territory change and dispersal distance were measured in a long-term study of Black Kites (Milvus migrans) living in an area of ∼100000 ha inExpand
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