Poor Knights Islands

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
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

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)
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


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 (2023) Important Bird Area factsheet: Poor Knights Islands. Downloaded from on 28/09/2023.