Fulmarus glacialis glacialis
Mathew knew of only one, caught on a cod line in Tenby Bay Dec 1980. Appeared in 1930 at Flimston Stack Rocks and landed on cliffs there in 1931. Since then, they have been present in the breeding season at many cliffs in the north, west, and south, but have not yet been recorded (1948) laying eggs, although breeding in the ajoining county of Cardigan (1947).
R.M.Lockley, G.C.S.Ingram, H.M.Salmon, 1949, The Birds of Pembrokeshire, The West Wales Field Society