At 11.55 hours on 10th November 1995, at the Remolar-Filipines Reserve on the Llobregat Delta, Barcelona, Spain, we recorded what seemed to be a co-ordinated attack by three species of raptor on a subadult female Northern Goshawk Accipiter gentilis. The reserve comprises 110 ha of saltmarsh and reedbeds fringed by scattered trees and a poplar Populus wood. The goshawk was perched in the upper part

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