Falco columbarius aesalon
A frequent visitor in autumn and winter to the islands; has probably bred Ramsey. Nests also recorded at St Davids, Goodwick, Maenclochog, Tenby, and elswhere.
R.M.Lockley, G.C.S.Ingram, H.M.Salmon, 1949, The Birds of Pembrokeshire, The West Wales Field Society