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
White-fronted tern have also bred on islands in Bass Strait, north of Tasmania. Many of the birds winter in south-eastern Australia, especially juveniles. White-fronted tern The white-fronted tern ("Sterna striata") is the most common tern of New Zealand. It rarely swims, apart from bathing, despite having webbed feet. The species is protected. White-fronted terns feed in large flocks by plunge diving on shoals of smelt and pilchards which have been driven to the surface by larger fish and are easily caught. Like all terns they fly with their heads and bills pointing down to see their prey. Breeding is between October and