Puffinus newelli myrtaePuffinus assimilis myrtaePuffinus auricularis myrtae The Rapa shearwater (Puffinus myrtae), is a rare seabird of the tropics from the family Procellariidae.

It breeds on the surrounding islets of Rapa in the Austral Islands of French Polynesia where it is known locally as the kaki kaki.

[3] The holotype was later found to be a juvenile and an adult specimen was described in 2017.

[4] A 2015 genetic study using DNA sequences of the mitochondrial cytochrome b gene, found that the Rapa shearwater is sister to a clade containing the Hawaiian shearwater (Puffinus newelli) and the little shearwater (Puffinus assimilis).

[5] Morphological data supports this relationship but the Rapa shearwater is much smaller than the other two species.