Rangatira South East Island

IBA Criteria

Year of most recent IBA criteria assessment: 2014

Populations of IBA trigger species
Species Current IUCN Red List Category Season Year(s) of estimate Population estimate IBA Criteria Triggered
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 Petrel Pterodroma axillaris VU breeding 1991-2010 335-1,000 breeding pairs A1, A4ii
Pitt Shag Phalacrocorax featherstoni EN breeding 1961-2003 39-63 nests A1, A4i
Chatham Oystercatcher Haematopus chathamensis EN resident 2009 3 breeding pairs A1, A4i
Chatham 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

Note: This table presents the IBA criteria triggered and the species that triggered then at the time of assessment, the current IUCN Red List category may vary from that which was in place at that time.

For more information about the IBA assessment process and criteria please click here

IBA Protection

Protected Area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)
Rangatira Nature Reserve 221 protected area contained by site 0


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

Recommended citation
BirdLife International (2022) Important Bird Areas factsheet: Rangatira South East Island. Downloaded from on 10/08/2022.