Phylloscopus proregulus – Telor Pallas – Vagrant
This Asian and Altai Mountain species occurs in Britain in most autumns (Cramp 1992), chiefly in the east but occasionally in the west. The Pembrokeshire records are one at Wooltack Point on 30 October 1982 (A.J. Hansen) and another at Strumble Head on 31 October 1984 (N.A. Lethaby).
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.