Rangatira South East Island

IBA Justification

The site was identified as important in 2014 because it was regularly supporting significant populations of the species listed below, meeting ('triggering') IBA criteria.

Populations meeting IBA criteria ('trigger species'):
Species Current IUCN Red List Category Season Year(s) Population estimate at site IBA criteria met
White-faced Storm-petrel Pelagodroma marina LC breeding 1994 840,000 breeding pairs A4ii
Broad-billed Prion Pachyptila vittata LC breeding 1960-1994 176,000-499,999 breeding pairs A4ii
Chatham Islands Petrel Pterodroma axillaris VU breeding 1991-2010 335-1,000 breeding pairs A1, A4ii
Pitt Island Shag Phalacrocorax featherstoni EN breeding 1961-2003 39-63 nests A1, A4i
Chatham Islands Oystercatcher Haematopus chathamensis EN resident 2009 3 breeding pairs A1, A4i
Chatham Islands Snipe Coenocorypha pusilla VU resident 1996 700-800 breeding pairs A1, A4i
Black Robin Petroica traversi VU breeding 2008-2009 103-128 individuals A1
A4iii Species group - seabirds n/a breeding - 1,000,000-2,499,999 breeding pairs A4iii

The current IUCN Red List category may differ from that which was valid at the time of IBA criteria assessment (2014).

IBA Protection

Protected area (PA) PA designation PA area (ha) Relationship of PA with IBA Overlap of PA with IBA (ha)
Rangatira Nature Reserve 221 protected area contained by site 0


Habitat (IUCN level 1) Habitat detail Extent (% of site)
Marine Coastal/Supratidal -
Shrubland -
Forest -
Marine Intertidal -
For more information about the IUCN Habitat classification, please click here.

Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Rangatira South East Island. Downloaded from on 28/02/2024.