| 翻訳と辞書 |
black stilt
The black stilt or kakī (Māori), ''Himantopus novaezelandiae'', is a large wader in the avocet and stilt family Recurvirostridae. The species is endemic to New Zealand. Adults are 40 cm long. They have very long red legs, a long thin black bill and black plumage. Juveniles have a white breast, neck and head, with a black patch around the eyes. Unfortunately, the black stilt is the world's rarest and least populous Charadriiform.
==Ecology and conservation==
Despite 20 years of intensive protection, this species remains the rarest wading bird in the world.〔Rod Morris and Alison Ballance (2008), ''"Rare Wildlife of New Zealand"'', Random House, page 113〕 Intensive management of black stilt began in 1981, when the population had declined to just 23 adult birds.〔Maloney, R., and Murray, D. 2002. Kaki (black stilt) recovery plan 2001-2011, NZ Department of Conservation: Wellington.〕 The current wild population is estimated at 85 adult birds (February 2010). There is a captive population of some 13 adults. Annual release in the wild of captive-bred birds, and predator control have probably prevented black stilt from becoming extinct in the wild.
During the breeding season, it is restricted to the Mackenzie Basin in the South Island. The majority of the black stilts will also overwinter in the Mackenzie Basin, unlike other waders in the region that migrate to warmer climates for winter.
They breed at 2–3 years of age. They are one of the world's most endangered birds. Drainage and hydroelectric development has in the past disturbed their braided river bed habitat. Predation from mammalian invasive species, most notably mustelids such as stoats, presently poses a serious threat to the survival of the species. The third major threat to this species is hybridization with the local and more numerous pied stilt ''H. himantopus''.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
■ウィキペディアで「black stilt」の詳細全文を読む
スポンサード リンク
| 翻訳と辞書 : 翻訳のためのインターネットリソース |
Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.
|
|