Abstract

DELLACASA M, Varia A; FIGUEROA R, Ricardo A; ALVARADO O, Sergio A  and  SCHLATTER, Roberto P. Flight behaviour of the Red-backed Hawk (Buteo polyosoma) during summer in Nevados de Chillán, Chile. Hornero [online]. 2011, vol.26, n.2, pp.171-175. ISSN 0073-3407.

We describe the flight behaviour of the Red-backed Hawk (Buteo polyosoma) during summer in Nevados de Chillán, Chile. Flight types most often used were gliding, wind-hovering and soaring (36.7%, 29.4% and 27.8% of the flying time, respectively). Spent time in gliding and wind-hovering peaked at mid-afternoon (17:00-19:00 h). Conversely, soaring was highest between mid-morning (10:00-11:00 h) and mid-day (13:00-14:00 h). Red-backed Hawk individuals appeared to use these flight types in an opportunistically manner using advantageous microclimatic and topographic conditions.

Keywords : Buteo polyosoma; Gliding; Hovering; Nevados de Chillán; Red-backed Hawk; Soaring.

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