Place: Fortuneswell, Portland, Dorset
Date: 6 March 2020.
Place: Coast path south of St. Justinian, Pembrokeshire
Date: 3 September 2020.
[Larus marinus, Family Laridae, Order Charadriiformes, Wikipedia Entry: Great black-backed gull]
The sound of the great black-backed gull (borrowed from the Xeno-Canto website, recordist Stuart Fisher)
Distribution and sightings of the great black-backed gull across the British Isles (borrowed and modified from the Bird Atlas Mapstore).