The Black-fronted Tern (Chlidonias albostriatus ) also known as Sea Martin, Ploughboy, Inland Tern, Riverbed Tern or Tarapiroe,[1] is a small tern generally found in or near bodies of fresh water in New Zealand and forages for freshwater fish, arthropods and worms. It has a predominantly grey plumage. Restricted to breeding in the eastern regions of South Island, it is declining and threatened by introduced mammals and birds.