Kakapo Codfish / Whenua Hou and Anchor, where they are closely monitored, and Little Barrier / Hauturu Island is being trialled as a third home for the species. The common English name "kakapo" comes from the Māori "kākāpō", from "kākā" ("parrot") + "pō" ("night"); the name is both singular and plural. "Kākāpō" is increasingly written in New Zealand English with the macrons that indicate long vowels. The kakapo was originally described by English ornithologist George Robert Gray in 1845 and named "Strigops habroptilus". Its generic name "Strigops" is derived from the Ancient Greek "strix", genitive "strigos" "owl", and "ops" "face", while
Flightless bird 85–92 days while females feed. They can go up to a week without eating and survive only off fat stores. The emu has been documented fasting as long as 56 days. If no continued pressures warrant the energy expenditure to maintain the structures of flight, selection will tend towards these other traits. Many flightless birds are extinct; this list shows species that are either still extant, or became extinct in the Holocene (no more than 11,000 years ago). Extinct species are indicated with a dagger (†). A number of species that are suspected, but not confirmed to be flightless, are