New Zealand Rockwren
The New Zealand Rockwren (Xenicus gilviventris), or Rock Wren, or Pīwauwau in (Māori, is a small New Zealand wren (family Acanthisittidae) endemic to the South Island of New Zealand. It is sometimes known as the South Island Wren, a name used to separate it from the unrelated Rock Wren of North America. While the species is currently restricted to alpine areas of the South Island, fossil evidence indicates it was once present in the North Island as well. It is the rarer of the two surviving species of New Zealand wrens and is threatened by introduced mammals.
The Rockwren is the only surviving species in the genus Xenicus, and is thought to have been closely related to the formerly more widespread Bushwren. Like the Bushwren and the Rifleman it is a poor flier, rarely flying more than two metres off the ground or for distances or more than 30 m. It is highly terrestrial, feeding in low scrub and open scree and rockfalls in alpine areas.
In 2008, nine rock wren were translocated to Secretary Island, a predator free island in Fiordland. Over the following two years a total of 40 rock wren were transferred onto the island. In 2010, a survey located twelve unbanded rock wren on Secretary Island, indicating they had started breeding successfully.
- BirdLife International (2012). "Xenicus gilviventris". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 16 July 2012.
- "Rock wren sightings sought as figures fall". Otago Daily Times. 30 December 2008. Retrieved 30 December 2008.
- "Secretary Island Translocation". faunarecovery.org.nz. Retrieved 3 November 2012.
- "New Zealand Rock wren thriving on new sanctuary". Wildlife Extra. Retrieved 3 November 2012.