Great Black-backed Gull (Larus marinus)

Great Black-backed Gull (Larus marinus)

Observation - Great Black-backed Gull (Larus marinus). Description: Great black-backed Gull Has a dark bill band, different to the lesser. Not quite an adult. Pictured with a smaller Black headed Gull ( Larus ribidbundus)

Great black-backed Gull Has a dark bill band, different to the lesser. Not quite an adult. Pictured with a smaller Black headed Gull ( Larus ribidbundus)