Wairau Lagoons

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
Black-billed Gull Larus bulleri NT non-breeding - abundant A1
Black-fronted Tern Chlidonias albostriatus EN non-breeding 2008-2014 15-650 individuals A1, A4i

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)
Wairau Riverbed Stewardship Area 14 protected area overlaps with site 0
Wairau Lagoons Wetland Management Government Purpose Reserve 2,379 protected area contained by site 2,379
Wairau Diversion Mouth Stewardship Area 277 protected area overlaps with site 0


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

Recommended citation
BirdLife International (2022) Important Bird Areas factsheet: Wairau Lagoons. Downloaded from on 28/06/2022.