Chlidonias niger niger

Recorded by Mathew as “seen occasionally” but he gives no dates, and only mentions it as seen as Castlemartin and shot at Fishguard. 

The only recent record is of an immature bird shot at St Davids, Sept 1904 (Bertram Lloyd).

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

More about the Black Tern in Pembrokeshire