The Collaborative International Dictionary
Procellarian
Procellarian \Pro`cel*la"ri*an\, n. [L. procella a storm.] (Zo["o]l.) One of a family of oceanic birds ( Procellarid[ae]) including the petrels, fulmars, and shearwaters. They are often seen in great abundance in stormy weather.
Wiktionary
procellarian
n. (context zoology English) Any of a family of oceanic birds (Procellaridae) including the petrels, fulmars, and shearwaters.