Herring gulls are champion opportunists, feeding on anything from discarded fish offal, to the chicks of other birds. They have a fondness for a good rubbish dump, particularly during winter when tourists laden with bags of chips are harder to find. This familiar gull can be distinguished from other gulls by its large size and grey upper parts. Despite its supreme versatility, herring gulls have suffered a 50% decline over the past 30 years, the cause of which is unclear.

Big Garden Birdwatch live webcam: We have live images of the UK's garden birds in partnership with the RSPB.

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