Flinders Island is one of the islands included in the Investigator Islands Important Bird Area identified by BirdLife International, a non-statutory status, awarded in 2009 because of the island group's population of fairy tern (a vulnerable species) , as well as significant populations of Cape Barren geese, Pacific gull and black-faced cormorant. Other birds for which the IBA is significant include large numbers of breeding short-tailed shearwaters and white-faced storm-petrels. The biome-restricted rock parrot has been recorded from most islands in the group.