Calidris maritima maritima
"An autumn visitor; not uncommon" - Mathew. Tracy called is rather scarce, but Dix considered "about as numerous as the Knot". It is found all the year round along the rocky coast, even in summer, and is often very tame; generally singly or in small numbers at midsummer, and more numerous in winter.
R.M.Lockley, G.C.S.Ingram, H.M.Salmon, 1949, The Birds of Pembrokeshire, The West Wales Field Society