Vagrant
One arrived at Skokholm in the evening of 27 April 1991 and was initially driven off by gulls, but managed to roost on the island. When it departed next morning it was seen flying over Skomer (M. Betts et al.). One was seen at Skomer on 29 July 1991 and another (presumably the same bird) at Mullock Bridge on 2 August (S.J. Sutcliffe et al.).