Larus glaucoides – GWYLAN YR ARCTIG – Rare visitor. Not recorded from June to August
This gull was first recorded at Nolton Haven on 25 September 1955 (E. Crouch) followed by 24 single birds in ten years between 1973 and 1992. The earliest arrival was on 25 September 1955 and the latest on 5 May 1989, the majority being seen between January and March. All were in coastal localities, including Skokholm and the Smalls, the most favoured being Fishguard -Harbour, Llanstadwell and the Gann. Birds of all ages have been involved but 78% were first- year birds.
A hybrid seen at Strumble Head on 1 April 1991 was thought to be an Iceland/Herring Gull cross.