A black-fronted tern (Chlidonias albostriatus) also known as sea martin, ploughboy, inland tern, riverbed tern or tarapiroe, searching the Rakaia fresh water River bed in the South Island for freshwater fish, arthropods and worms. It is declining and threatened by introduced mammals and birds. It is rated as endangered on the International Union for Conservation of Nature (IUCN)'s Red List of Threatened Species.
A black-fronted tern (Chlidonias albostriatus) in a food fight with a black-billed gull who’s fouraging along the Rakaia fresh water River bed in the South Island for freshwater fish, arthropods and worms. It is declining and threatened by introduced mammals and birds. New Zealand
