SAP: Chatham Island Red-crowned Parakeet

SAP: Chatham Island Red-crowned Parakeet

Worldwide Species Action Plans

Cyanoramphus novaezelandiae is known from New Zealand, where it was historically extremely abundant on the mainland but is now effectively extinct (recent records are now believed to be cage escapes/releases or vagrants from offshore island populations). Populations currently exist on the Kermadec islands, Three Kings, some Hauraki Gulf islands, Kapiti Island, Stewart Island and surrounding islands, Chatham Islands, Snares, Antipodes Islands, and as a hybrid swarm (with Yellow-crowned Parakeet C. auriceps) on Auckland Islands. It is now extinct on Lord Howe Island and Macquarie Islands. Past population estimates suggest the total population was in excess of 20,000 individuals, but historically the island populations were part of an effectively panmictic population. When the mainland linking populations became extinct, the island populations became isolated, and their effective population sizes are now much reduced. Declines are likely to be taking place on Stewart Island (by inference from measured declines of other species owing to rat and cat predation), although any decline has been minimal. There have been efforts to aid the recovery of the species, including the eradication of predators and translocation of founding populations to islands free of predators. In 2004, a research project was initiated on Tiritiri Matangi Island to investigate the reproductive biology of the species and improve conservation practices. The island also provides a place for education and public awareness campaigns

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