Hydroprogne caspia – Môr-wennol Fwyaf – vagrant
1994 – One Skomer 28th and 30th May 1994 (M Wilson); the first Pembrokeshire record
2020 – Adult Gann 4 Aug (DJA) circulating BBRC. Second county record, the other was on Skomer
28 May 1994.
Records extracted from the Pembrokeshire Bird Reports, which may contain more detail than shown here.