A small group of two all dark rather small species,
superficially resembling dark Gadlfy Petrels or Strom Petrels. -
Bulwer's Petrel Bulweria bulwerii, Atlantic, Pacific and Indian
Ocean. - Jouanin's Petrel Bulweria fallax, northwestern Indian
Ocean, breeding interior Oman. Long time Bulweria petrels were
considered to belong to the Gadfly Petrels, or at least very
closely related to them, although some resemblances to the
Shearwaters were also noted. Penhallurick and Wink (2004) found
that, based on their genetic analysis, Bulweria is a sister
clade to Procellaria that diverged about 32 mya from a common
ancester. Bulweria fallax has a limited distribution in the
waters between eastern Africa and India, but is known to wander
over huge distances, with records from Australia, Italy and
Hawaii (Onley & Scofield 2007). It breeds in Yemen and Oman. The
smaller bulwerii ranges in the tropical and subtropical zones of
all three major oceans and breeds at many islands in the
Atlantic and Pacific. The flight of bulw