Tokelau is a dependent territory of New Zealand in Polynesia in the Pacific Ocean, comprising three coral atolls with a total land area of 10.1 km2 (3.9 sq mi). There are 33 species of birds that have been recorded from Tokelau, of which one has been introduced by humans. Additionally, Anas ducks are also seasonal visitors to the islands. The most common species in Tokelau are the black noddy, brown noddy, and white tern, which each have populations of thousands of pairs on each of the atolls. Three species of birds found in Tokelau, the bristle-thighed curlew, bar-tailed godwit, and flesh-footed shearwater, are near-threatened. One of the species, the Australian masked-owl, is locally extinct. Before the arrival of humans, Tokelau may also have been inhabited by Halcyon kingfishers, Galli