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European Herring Gull in adult summer plumage. This gull is on the 'red list' for the highest conservation priority, the species needing urgent help Stock Photo - Alamy
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Observations of a novel predatory gull behavior on an invasive ascidian: A new consequence of coastal urban sprawl? - Holman - 2019 - Ecosphere - Wiley Online Library
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Gone gull: Climate crisis taking toll on seabird numbers, as more turn to urban scavenging | The Independent
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