The sooty tern (Onychoprion fuscatus ) is a seabird in the family Laridae. It is a bird of the tropical oceans, returning to land only to breed on islands throughout the equatorial zone.
The bridled tern (Onychoprion anaethetus ) is a seabird of the family Laridae. It is a bird of the tropical oceans. The scientific name is from Ancient Greek. The genus comes from onux meaning "claw" or "nail", and prion, meaning "saw". The specific...
The Aleutian tern (Onychoprion aleutica) is a migratory bird living in the subarctic region of the globe most of the year. It is frequently associated with the Arctic tern, which it closely resembles. While both species have a black cap, but the...
The spectacled tern (Onychoprion lunatus ), also known as the grey-backed tern, is a seabird in the family Laridae.