Vagrant
The Danish and west German breeding population of this tern disperses to the coast before migrating southwards (Cramp 1985) and was probably the origin of single birds seen at Dale Roads on 21 September 1968 (P.J.Morgan) and at Strumble Head on 16 October 1983 (J.W.Donovan, G.H.Rees, and G.J.Walker) and on 30 July 1985 (R.Dobbins).