Wikipedia
White tern
The white tern (Gygis alba, 1786) is a small seabird found across the tropical oceans of the world. It is sometimes known as the fairy tern although this name is potentially confusing as it is the common name of the fairy tern Sternula nereis. Other names for the species include angel tern and white noddy.
Usage examples of "white tern".
By watching for birds that sleep on land by night but fish in the ocean by day, such as the manu o ku, or white tern, the navigator can tell that an island is nearby.