Parts of this article (those related to the Known species sections) need to be updated. The reason given is: the Known species section includes a partly outdated generic and family-level classification and doesn't cite any relevant sources published since 2004 (or any relevant phylogenetic studies published since the late '90s).(September 2021) |
Petrels are tube-nosed seabirds in the phylogenetic order Procellariiformes.