Birdsong field guide
Black-naped Tern
Sterna sumatrana
An elegant, small-bodied seabird characterized by its exceptionally pale, nearly white plumage and a distinctive black band encircling its nape.
What it sounds like
A sharp, high-pitched 'tsii-er' or a grating, repetitive 'chit-chit-ter'.
Reference call, compare with what you heard
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Field notes
- It is strictly marine, rarely observed inland or near freshwater habitats.
- The species possesses very pale grey upperparts that often appear translucent or white in bright tropical sunlight.
- Nesting occurs in loose colonies on coral shingles, rocky outcrops, or sandbanks, often just above the high-tide mark.
- Unlike many other terns, it lacks a full black cap, retaining only the namesake black stripe from eyes to nape.
- It is a specialized plunge-diver, feeding primarily on small surface-dwelling fish and crustaceans in shallow reef waters.
Habitat
Tropical and subtropical coastal environments, coral reefs, and offshore islets.
Range
Tropical Indian and Pacific Oceans, from the East African coast across Southeast Asia to Northern Australia and Western Pacific islands.
Similar & commonly confused birds
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