Shearwater sp off St Ives Island

This shearwater was seen today off St Ives Island and is showing some characteristics of Yelkouan.  Any constructive comments welcome.  Showing clear black under tail coverts and white vent, extensive white underwing and long legs.

Showing black under tail coverts and white vent.

Showing raised head profile, white underparts and short tail.

Showing short tail and leg projection.