Factors affecting the persistence of a reintroduced population of North Island robin

Faline Drummond 
Auckland Council Research and Evaluation Unit, RIMU
Publication date:

Reintroduction is increasingly being used for species recovery and restoration, as it often provides the only means to restore locally extinct populations. The North Island robin (Petroica longipes) was once locally extinct in the Auckland region. North Island robin are now being reintroduced to predator controlled areas on the mainland as part of an Auckland Council initiative to recover and re-establish threatened species in the Auckland region.

This project focuses on a reintroduced population of North Island robin at Tāwharanui Regional Park, a 550ha mainland peninsular sanctuary, approximately 80km north of Auckland central. Tāwharanui, with its predator-proof fence, is free of a range of pest animals including rats, stoats and possums, and operates as an open sanctuary that integrates recreation, conservation, and farming. Twenty-five North Island robins were reintroduced to Tāwharanui from Tiritiri Matangi and Puhoi in 2007. Since the robins release, Auckland Council has collected annual data on survival and breeding success. Chicks are typically banded on the nest 9-12 days after hatching, and are given a unique colour band combination. Despite low post-release dispersal and high annual productivity, recruitment into this population has remained low.

RIMU masters student research summary

MSc thesis, Massey University

An integrated approach to predicting the fate of reintroduced populations

Last updated: 2018-08-21