Gull-billed tern

Gelochelidon is a genus of terns. It was recently considered a monotypic genus, but the Australian tern was split from the gull-billed tern.

Species
The genus contains 2 species:
 * Gull-billed Tern, Gelochelidon nilotica
 * Australian Tern, Gelochelidon macrotarsa