Scientific: Larus delawarensis

Cymraeg: Gwylan Fodrwybig

1986
Adult, Burry Port Harbour, 20 February, first record for the County.

1987
1, 2nd winter plumage, Cefn Sidan Sands, 8 July. Second record for county. Record circulating BBRC.

1991
Singles, 2nd winter, Cefn Sidan 2nd; Sandy Water Park, 17 March. Subject to acceptance to WRAG.

1992
Sandy Water Park, Llanelli: adult on 1st to 2nd January, presumed same 22nd to 26th February and 2nd March, possibly same on 17th October. Adult-summer on 14th April. North Dock, Llanelli: 2 adults-summer on 17th April. At least three individuals in the best ever year for the species. There had been four previous records, all since 1986.

1994
An adult was seen on a flooded field alongside the A40 west of Carmarthen on 10th February. Last recorded in 1992.

1995
A good year for this species, with a 1st winter/summer at Sandy Water Park, Llanelli on 4th May. This was followed by a 1st summer bird at Penclacwydd on 15th, 19th and 27th -28th June and also at Sandy Water Park, Llanelli. On 30th June – 1st July; with a different 1st summer individual at Penclacwydd on 17th June.

A 2nd winter was at Sandy Water Park, Llanelli from 26th December – 13th January 1996.

1996
A 2nd winter first seen at Sandy Water Park on 26th December 1995 was seen intermittently to 24th February.