Aythya marila marila

Common but not numerous winter visitor, chiefly to Milford Haven.  Frequent at Orielton, where twenty were present in Feb/Mar 1937 (H.A.Gilbert)

R.M.Lockley, G.C.S.Ingram, H.M.Salmon, 1949, The Birds of Pembrokeshire, The West Wales Field Society

More about the Scaup in Pembrokeshire