Nog meer roepende Slechtvalken Falco peregrinus in het winterhalfjaar

In response to previous descriptions of calling Peregrine Falcons in winter, three more records are provided, all of them in the northern Netherlands. The first observation on 22 March 1990 was an adult female that was chased off its prey and started calling in response. On 15 December 1991, and adult and a juvenile female were calling but the cause of the turmoil remained unknown. In another observation of an adult and a juvenile female, on 6 November 2004, the adult chased and stooped at the juvenile while calling, apparently associated with aggressive behaviour. In the latter case, no prey (remains) could be found on the spot.