Phylloscopus schwarzi – Telor Radde – Vagrant
A Siberian species that winters in south Asia, it is occasionally displaced westwards during predominantly easterly winds (Cramp 1992). Such an occurrence resulted in one at Skokholm on 22 October 1968 (C. Britton) which was the first for Wales.
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.