Procellariiformes

Families overview for this order

Molecular evidence revealed that traditional grouping of all storm-petrels in a single family was paraphyletic#R#R; precise relationships at higher levels within this order are still disputed, but storm-petrels now generally split into two families, comprising “southern” Oceanitidae and “northern” Hydrobatidae#R.

Molecular evidence revealed that traditional grouping of all storm-petrels in a single family was paraphyletic#R#R; precise relationships at higher levels within this order are still disputed, but storm-petrels now generally split into two families, comprising “southern” Oceanitidae and “northern” Hydrobatidae#R.

  • Small, light, "tubenosed" seabirds with long legs and rounded wings, or shorter legs and more pointed wings.
  • Cosmopolitan, in all oceans.
  • Marine, mainly offshore and pelagic.

Several recent reviews of this family have been produced. The following list owes much to an extensive phylogenetic analysis of 24 taxa based on full mtDNA (cytochrome b) sequences#R.

  • Large, heavy seabirds with very long wings, long, heavy bill and "tubenose".
  • Circumpolar in Southern Ocean, with outposts in North Pacific.
  • Marine and pelagic.
  • Medium-sized to large seabirds with compact build, long, narrow wings and "tubenose".
  • Cosmopolitan, in all oceans; greatest diversity in Southern Hemisphere.
  • Marine and pelagic.