The site was identified as important in 2008 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|
|Leach's Storm-petrel Hydrobates leucorhous||VU||breeding||1985||72,000 breeding pairs||A4ii|
|A4iii Species group - seabirds||n/a||breeding||1985||50,000-99,999 breeding pairs||A4iii|
The current IUCN Red List category may differ from that which was valid at the time of IBA criteria assessment (2008).
|Habitat (IUCN level 1)||Habitat detail||Extent (% of site)|
|Land-use||Extent (% of site)|
BirdLife International (2023) Important Bird Area factsheet: Green Island. Downloaded from http://datazone.birdlife.org/site/factsheet/green-island-iba-canada on 04/10/2023.