Great Black-backed Gull Identification

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The Four Keys to ID

  • Size & Shape

    This is the largest species of gull in the world. They are stout-bodied, with broad wings, a thick neck, and a heavy, slightly bulbous bill.

    Relative Size

    Larger than a Herring Gull, but smaller than a Brown Pelican.

    Relative Sizebetween crow and goosebetween crow and goose
    • Both Sexes
      • Length: 27.9-31.1 in (71-79 cm)
      • Weight: 45.9-70.5 oz (1300-2000 g)
      • Wingspan: 57.5-63.0 in (146-160 cm)

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