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By: Dellacasa M, Varia A - Figueroa R., Ricardo - Alvarado Orellana, Sergio A. - Schlatter, Roberto PabloType: ArticleIn: El horneroVolume:Series:Issue:Date: 2011-12-01Page Range:Publication Info:Subjects: Buteo polyosoma Gliding Hovering Nevados de Chillán Red-backed Hawk Soaring