Chlidonias leucopterus - Rare visitor.
The closest breeding areas of the White-winged Black Tern are in Eastern Europe. Winter quarters are in southern Africa.
1973 - The first to be recorded in Pembrokeshire was located by Stuart Devonald, a juvenile at the Gann on the 31 August.
1976 - Single juveniles were then recorded at Llys y fran Reservoir on the 16 to 28 October
1986 - single juvenile at Llanstadwell on the 26 August
1990 - Single adult at Skokholm on the 3 September
1997 - single adult at Strumble Head on 15 October
1999 - single juvenile at Strumble Head on the 1 August
2016 - an adult at Penberry Reservoir, St. David’s 25th – 26th May