Gelochelidon nilotica – Môr-wennol Ylfinbraff – 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).
CRAMP, S. (ed.) 1977-1993. Handbook of the birds of Europe, the Middle East, and North Africa: the birds of the Western Palearctic. Oxford, Oxford University Press. 7 Vols
More about the Gull-billed Tern in Pembrokeshire
Gelochelidon nilotica – Môr-wennol Ylfinbraff – Vagrant Earlier records are summarised in Gull-billed Tern 1994 2016 – A single seen on Skomer on 9th May. (3CY+) Source: Pembrokeshire Bird Report, 2016. More about the Gull-billed Tern in Pembrokeshire