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- Small, dark tern.
- In breeding plumage dark head and chest and gray wings are distinctive.
- In nonbreeding plumage, head and underside white, wings gray, and dark spot behind eye and dusky crown and nape.
Immature DescriptionSimilar to nonbreeding adult, but with pale scaling on back.
Relative Sizebetween robin and crow
- Both Sexes
- Length: 9.1-10.2 in (23-26 cm)
- Weight: 1.8-2.1 oz (50-60 g)
- Wingspan: 22.4-23.6 in (57-60 cm)