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- 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 DescriptionSimilar to adult.
- Both Sexes
- Length: 9.1 in (23 cm)
- Weight: 5.3-7.0 oz (150-200 g)