Gallinula chloropus chloropus
Common resident. One at the South Bishop lighthouse at 1am, 9 Oct 1884, but there is little evidence of true migration. Breeds Skokholm, Skomer, Ramsey and Caldey.
R.M.Lockley, G.C.S.Ingram, H.M.Salmon, 1949, The Birds of Pembrokeshire, The West Wales Field Society