The islands are clustered in three chains, collectively referred to as the Muttonbird or Tītī Islands. The island group's official name is Tītī / Muttonbird Islands.
Eastern chain Rakawahakura, Takawini, Potuatua, Pomatakiarehua, Kaihuka and Wharepuaitaha Islands.
Southern, or south-western, chain Four distinct groups of islands make up the south-western chain. Close to Stewart Island's south-westernmost point is
Taukihepa / Big South Cape Island, close to which lie Poutama, Putauhina, Solomon, Kaimohu, Pukaparara, Tamaitemioka and Pohowaitai Islands and the Putauhina Nuggets. In the open sea 8 km to the north lie Big Moggy, Little Moggy and Mokinui Islands. To the east of these, close to Stewart Island, the
Boat Group consists of
Big, Kundy,
Betsy and Rat Islands. To the south of these lie the small rocky islets of The Brothers. The southern Muttonbird Islands have been identified as an
Important Bird Area by
BirdLife International because of their significance as a breeding site for sooty shearwaters, with over a million breeding pairs, and
mottled petrels. ==See also==