Classified as Endangered (EN- A1d, C1) by the IUCN Red List 2002 (2). Listed on Appendix II of CITES, and listed under ASCOBANS under the auspices of the Convention on Migratory Species (CMS or Bonn Convention) (1).  The North Island subpopulation is classified as Critically Endangered (CR - C1, D) (2).