學名:Nestor
界: 動物界 Animalia
門: 脊索動物門 Chordata
綱: 鳥綱 Aves
目: 鸚形目 Psittaciformes
科: 鸚鵡科 Psittacidae
亞科: 鸚鵡亞科 Psittacinae
族: 啄羊鸚鵡族 Nestorini
屬: 啄羊鸚鵡屬 Nestor
啄羊鸚鵡屬,是啄羊鸚鵡族當中的唯一一屬,包括兩個來自紐西蘭的品種,及一種已絕種,來自澳洲諾福克島的鸚鵡。
品種列表:
啄羊鸚鵡 Nestor notabilis
卡卡鸚鵡 Nestor meridionalis
北島卡卡鸚鵡 Nestor meridionalis septentrionalis
南島卡卡鸚鵡 Nestor meridionalis meridionalis
諾福克啄羊鸚鵡 Nestor productus (已絕種)
分類學:
本屬共有三個種,分別出現於紐西蘭及澳洲,其中在澳洲出現的諾福克啄羊鸚鵡約於1851年經已滅絕。
牠們這三個品種均與一種於15萬年前居於紐西蘭森林地區的遠古祖先有血緣關係。
直至2005年一次ZW性別決定系統DNA序列研究中,發現啄羊鸚鵡和卡卡鸚鵡與單型種鴞鸚鵡有親連關係。
從分子數據分析中進一步指出兩種啄羊鸚鵡族的鸚鵡與鴞鸚鵡均來自同一個祖先,而這祖先一早已脫離了鸚鵡科各種鸚鵡的演化軌跡而獨樹一幟。
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