Bonaparte's Gull Identification

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The Four Keys to ID

  • Size & Shape

    A small, ternlike gull, with slender bill, rather narrow, pointed wings, and slim body.

    Relative Size

    Larger than a Common Tern, smaller than a Ring-billed Gull.

    Relative Sizecrow sizedcrow-sized
    Measurements
    • Both Sexes
      • Length: 11.0-11.8 in (28-30 cm)
      • Weight: 7.4-8.3 oz (210-234 g)
      • Wingspan: 35.4-39.4 in (90-100 cm)