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Gull-billed Tern Gelochelidon nilotica

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Breeding adult

Rather stocky tern with a thick black bill. Breeding birds have an entirely black crown.

Breeding adult

Stocky with a thick black bill and black legs. The crown is entirely black.

Breeding adult

Note notched tail and flight and dusky tips to the primaries.

Juvenile

Juveniles have a smudgy gray patch behind the eye and a thick bill that is often pale at the base.

Nonbreeding adult

Stocky tern with a thick black bill and black legs. Nonbreeding birds have a dark smudge behind the eye.

Breeding adult

Breeding birds have an entirely black cap. Thick black bill is the key field mark.

Recommended Citation

Gull-billed Tern (Gelochelidon nilotica), In Neotropical Birds Online (T. S. Schulenberg, Editor). Cornell Lab of Ornithology, Ithaca, NY, USA. retrieved from Neotropical Birds Online: https://neotropical.birds.cornell.edu/Species-Account/nb/species/gubter1