black-backed gull

Noun
  1. White gull having a black back and wings (synset 102044529)
    is a type of: gull, sea gull, seagull - mostly white aquatic bird having long pointed wings and short legs
    belongs to: genus larus, larus - type genus of the Laridae
    same as: cob, great black-backed gull, larus marinus

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