Emberiza calandra
Resident but very local and confined prinicapally to St Davids area, Dale peninsular and Castlemartin district. Probably decreasing. Breeds, or has bred, on Ramsey. Two singing there 28 June 1927 (Bertram Lloyd).
R.M.Lockley, G.C.S.Ingram, H.M.Salmon, 1949, The Birds of Pembrokeshire, The West Wales Field Society