the grey morph of common cuckoos is thought to mimic the Eurasian sparrowhawk (Accipiter nisus), in what is known as the sparrowhawk mimicry hypothesis (e.g. Thorogood and Davies2012; Gluckman and Mundy2013). This sparrowhawk is a predator of small passerines...
We studied disappearance of Pied Flycatchers (Ficedula hypoleuca) during four breeding seasons in a woodland area in Norway provided with nest boxes. The main cause of disappearance was probably predation by the European Sparrowhawk (Accipiter nisus). Disappearance was nonsignificantly higher in ...
The basic intraspecific functions of females' sparrowhawk-like "bubbling calls" have not yet been characterized, whereas interspecifically, they use it for reducing antiparasitic attacks by their hosts. Our playback experiments with bubbling calls revealed that both female and male cuckoos responded ...