Poor Knights Islands

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
Fairy Prion Pachyptila turtur LC breeding 2009 35,500-100,997 breeding pairs A4ii
Pycroft's Petrel Pterodroma pycrofti VU breeding 1940-2013 10-20 breeding pairs A1
Buller's Shearwater Ardenna bulleri VU breeding 1981 200,000-999,999 breeding pairs A1, A4ii
Australasian Gannet Morus serrator LC breeding 1946-2013 2,890-4,170 breeding pairs A4ii
A4iii Species group - seabirds n/a - - 100,000-499,999 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)
Poor Knights Islands Nature Reserve 287 protected area overlaps with site 287
Poor Knights Islands Marine Reserve 1,922 protected area is adjacent to site 0


IUCN Habitat Habitat detail Extent (% of site)
Marine Coastal/Supratidal -
Shrubland -
Forest -
Rocky areas (eg. inland cliffs, mountain peaks) -
Marine Intertidal -
For further information about the habitat classification please click here.

Recommended citation
BirdLife International (2022) Important Bird Areas factsheet: Poor Knights Islands. Downloaded from on 15/08/2022.