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Great Shearwater Identification

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The Four Keys to ID

  • Size & Shape

    Great Shearwaters are large shearwaters but are considerably smaller than Herring Gulls. They have long, straight, medium-width wings, and their head and tail project about equally from the body. The bill is thin, and the tail tapers slightly.

    Relative Size

    Larger than a Laughing Gull, smaller than a Herring Gull.

    Relative Sizecrow sizedcrow-sized

    • Both Sexes
      • Length: 16.9-20.1 in (43-51 cm)
      • Weight: 23.6-35.1 oz (670-995 g)
      • Wingspan: 39.4-46.5 in (100-118 cm)