Pittock Reservoir

IBA Criteria

Year of most recent IBA criteria assessment: 2008

Populations of IBA trigger species
Species Current IUCN Red List Category Season Year(s) of estimate Population estimate IBA Criteria Triggered
Ring-billed Gull Larus delawarensis LC passage 1992 86,000 individuals A4i
Arctic Herring Gull Larus smithsonianus LC passage 1988 18,000 individuals A4i
A4iii Species group - waterbirds n/a passage 1988-1992 50,000-99,999 individuals 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


IUCN Habitat Habitat detail Extent (% of site)
Forest Temperate deciduous -
Shrubland Scrub -
Wetlands (inland) Freshwater lakes & pools -
Artificial/Terrestrial Arable land, Forestry & agro-industrial plantations -
For further information about the habitat classification please click here.

Land use

Land-use Extent (% of site)
agriculture -
nature conservation and research -
tourism/recreation -
For further information about the land use classification please click here.

Recommended citation
BirdLife International (2023) Important Bird Areas factsheet: Pittock Reservoir. Downloaded from on 23/03/2023.