Lagopus scoticus scoticus
Listed by Geo Owen as breeding in 1603. Mathew doubted if any were still left on Prescelly, where a few used to breed. The last he knew of were shot in 1885. No known records since then.
R.M.Lockley, G.C.S.Ingram, H.M.Salmon, 1949, The Birds of Pembrokeshire, The West Wales Field Society