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Merlin Bird ID

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    Cassin's Auklet Identification

    Adult Description

    • Small seabird.
    • Stocky, with round head and little neck.
    • Dark gray above and below.
    • White crescents above and below eyes.
    • Short, thick, upturned bill, with pale base to lower mandible.

    Immature Description

    Similar to adult.
    Relative Size

    Relative Sizerobin sizedrobin-sized
    • Both Sexes
      • Length: 9.1 in (23 cm)
      • Weight: 5.3-7.0 oz (150-200 g)