Uria grylle grylle
Montagu (1820) said that a few then bred near Tenby. Mathew know of no recent record in 1894. Since then it has been seen: one Teifi estuary, July 1914 (T.Ground); one St Davids Head, 18 June 1924 (C.M.Acland); and one same place 16 July 1925 (Bertam Lloyd); one 15 July 1932 and 15 July 1933 in Jack Sound (R.M.L.)
R.M.Lockley, G.C.S.Ingram, H.M.Salmon, 1949, The Birds of Pembrokeshire, The West Wales Field Society