No sign of BTD at Lisvane Res, however male Greater Scaup still present.
Just to add a bit more information on Ring-billed Gull sightings in NPT; some documented records are as follows :-
22 Jan 1990 [1st W] Eglwys Nunydd Reservoir (NO)
13 Mar 1994 [Ad W] Jersey Marine (RHAT)
15 Dec 1996 [Ad W] Port Talbot Docks (DMC, GR, PR, DS)
05 Sep 1997 [Ad W] Aberavon Beach (DMC)
06 Jan 1999 [Ad W] Eglwys Nunydd Reservoir (DR)
28 Jan 2001 [Ad W] Margam Wharf (DMC, GR, DS)
25 Jan 2004 [Ad W] Neath Estuary (DMC)
Ring-billed Gull records in MapMate (includes all NPT records).
Black = 2013
Red (large) = 2000-2012
Red (small) = pre 2012
Black Redstart at Porthcawl
Seen in local allotments