Brown Falcon Falco berigora Pair Successfully Raises Australian Hobby F longipennis Nestlings

Abstract

During a long-term study of the behaviour and ecology of the Brown Falcon Falco berigora in southern Victoria, a pair was observed successfully raising Australian Hobby F. longipenni nestlings. This unusual observation is most likely a consequence of only a single nest-site being available within the territory of both pairs, with the Brown Falcon pair taking over the nest and eggs after the Hobby pair had laid.