Podiceps griseigena griseigena
Tracy said that he had several times killed this species on the millpond at Pembroke. One Tenby, spring 1898; one Crickmarren Pond, 1 Mar 1917; one Solva, 10 Sept 1920; one St Ann's Head, 21 Apr, 1938.
R.M.Lockley, G.C.S.Ingram, H.M.Salmon, 1949, The Birds of Pembrokeshire, The West Wales Field Society