Terns (Sternidae)

Yellow-billed Tern (Sterna superciliaris) - HBW 3, p. 658

French: Sterne argentée German: Amazonasseeschwalbe Spanish: Charrancito Amazónico
Other common names: Amazon Tern

Taxonomy: Sterna superciliaris Vieillot, 1819, Paraguay.
Forms superspecies with S. albifrons, S. saundersi, S. antillarum and S. lorata. Monotypic.

Distribution: E Colombia E to the Guianas and S to NE Peru and on to C Argentina (Buenos Aires).