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Location New Zealand
Central coordinates 167o 37.91' East  46o 46.36' South
IBA criteria A1, A4i, A4ii, A4iii
Area 1,369 ha
Altitude 0 - 250m
Year of IBA assessment 2014

Royal Forest and Bird Protection Society of New Zealand Inc

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Fiordland Penguin Eudyptes pachyrhynchus breeding  1934-1995  125-259 breeding pairs  A1, A4ii  Vulnerable 
Yellow-eyed Penguin Megadyptes antipodes breeding  1940-2014  44-100 nests  A1, A4ii  Endangered 
Mottled Petrel Pterodroma inexpectata breeding  1934-2006  203,333-499,999 breeding pairs  A1, A4ii  Near Threatened 
Cook's Petrel Pterodroma cookii breeding  1934-2007  2,601-20,000 breeding pairs  A1, A4ii  Vulnerable 
Sooty Shearwater Ardenna grisea breeding  2001-2006  min 173,000 breeding pairs  A4ii  Near Threatened 
Stewart Shag Phalacrocorax chalconotus breeding  2011  44-51 breeding pairs  A1, A4i  Vulnerable 
Yellowhead Mohoua ochrocephala resident  present  A1  Endangered 
A4iii Species group - seabirds breeding  1999  100,000-499,999  good  A4iii   
New Zealand Kaka Nestor meridionalis resident  present  A1  Endangered 
Kakapo Strigops habroptila resident  present  A1  Critically Endangered 

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Codfish Island Nature Reserve 1,396 protected area contained by site 0  


IUCN habitat Habitat detail Extent (% of site)
Marine Coastal/Supratidal   major
Marine Intertidal   major
Shrubland   major
Forest   major
Wetlands (inland)   minor
Grassland   major

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Recommended citation  BirdLife International (2016) Important Bird and Biodiversity Area factsheet: Whenua Hou Codfish Island. Downloaded from on 26/10/2016

To provide new information to update this factsheet or to correct any errors, please email BirdLife