Spectacled tern Spectacled tern The spectacled tern ("Onychoprion lunatus"), also known as the grey-backed tern, is a seabird in the family Laridae. A close relative of the bridled and sooty terns (with which it is sometimes confused), the spectacled tern is less common than the other members of its genus and it has been studied less. The three species, along with the Aleutian tern were recently split into a new genus "Onychoprion" from "Sterna" (Bridge "et al.", 2005). They resemble the sooty tern but with a grey back instead of a black one. Their breast and underparts are white, and they have
Miller Tern Miller Tern The Miller Tern is an American single-seat, high wing glider that was designed by William Terrance Miller and offered as plans for amateur construction. Named for the bird, the Tern was the product of Miller's desire to design a sailplane specifically for homebuilding, providing ease of construction and good performance for its day. The first Tern was completed in 1965 and at least 36 more were completed in the USA, Canada and other countries. Plans are no longer available. The Tern is constructed from a combination of wood and fiberglass. It has a fixed monowheel landing gear, dive