The site was identified as important in 2015 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|
|Gentoo Penguin Pygoscelis papua||LC||breeding||2012-2013||4,803 breeding pairs||A4ii|
The current IUCN Red List category may differ from that which was valid at the time of IBA criteria assessment (2015).
BirdLife International (2023) Important Bird Area factsheet: Yankee Harbour, Greenwich Island. Downloaded from http://datazone.birdlife.org/site/factsheet/yankee-harbour-greenwich-island-iba-antarctica on 30/09/2023.