Fairy tern of extinction for decades. The fairy tern was consequently uplisted to Vulnerable status in 2008. The New Zealand fairy tern has numerous breeding areas, largely incorporating the upper-north region of the North Island. In 2011, there were only about 42 known individuals. With a breeding program in place by the New Zealand Department of Conservation, the population was estimated in 2018 at 43. Fairy tern The fairy tern ("Sternula nereis") is a small tern which is native to the southwestern Pacific. It is listed as "Vulnerable" by the IUCN and the New Zealand subspecies is "Critically Endangered". There are three
Royal tern adult royal tern has an average wingspan of , for both sexes, but their wingspan can range from . The royal tern's length ranges from and their average weight is anywhere from . The calls of the royal tern are usually short, clear shrills. Some of the shrills sound like "kree" or "tsirr"; the royal tern also has a more plover like whistle that is longer, rolling and is more melodious. In various parts of its range, the royal tern could be confused with the elegant tern, lesser crested tern (the other orange-billed terns), and the greater crested tern. It