Habitats fréquenté par une population insulaire de Petit-duc scops Otus scops (île d'Oleron, Charente-Maritime, France) | Habitat used by an insular population of Eurasian Scops Owl Otus scops on Oleron Island (Western France)
2012
Bavoux, C. | Burneleau, G. | Barbraud, C. | Métivier, J.-M. | Roulin, A.
Singing males of Scops Owl were censused over a 27-year period (1981-2007) on Oleron, an island under heavy pressure of urbanization and tourism. Habitats used by the species were inferred from the location of singing individuals. Variation in their numbers was analyzed as a function of the structure of the male's home range. The present analysis is based on a previous study in abundance and distribution of singing males and on an accurate mapping of the available habitats over the island. On Oleron 80% of singing males were contacted in wooded areas. By modelling the effect of habitat traits we showed that the density of singing males was positively influenced by the importance of wooded areas and negatively influenced by urbanized areas. This situation is in contrast with what has been described elsewhere for the Scops Owl, particularly in the Mediterranean region where this species is much more linked to urbanized areas. The occurrence in wooded areas on Oleron may both reflect insect abundance and severe reduction in cultivated areas.
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