The petrel family named Procellariidae contains a variety of mostly mid- sized
species. These include (A) shearwaters exemplified by a Scopoli’s Shearwater
photographed against the Mediterranean Sea carrying a geolocator device
on its leg (© Maties Rebassa), (B) the extremely oceanic gadfly petrels
such as Murphy’s Petrel of the Pacific (© Michael Brooke), (C) the fulmars
and allied species such as the Southern Fulmar (© Richard Phillips),
and (D) the prions, a group where the several species look very similar.
Illustrated is an Antarctic Prion (© Oliver Krüger).D
C