Manx Shearwater, Procellariiformes, Procellariidae, Puffinus puffinus

Description: Mostly brown'ish black above, white under parts including the undertail coverts. Wingbeats or quick and choppy. Darker adults have a pale crescent shape behind the cheek, dark lores and a dark cheek.

	Buller's	Sooty	Short-tailed	Pink-footed	Flesh-footed	Manx
wingspan	40"	40"	38"	43"	40"	33"
overall color	gray, black & white	brown & silvery	mostly brown	lt. brownish & white	dark brown	black & white
color of coverts	white	silvery	brown	mottled white	dark	white
color of top on body	black & silver	dark	dark	lit & drk brown	dark	dark
color of underside body	white	brown	brown	white	dark	white
bill	slinder gray	dark	short dark	pink	heavy pink	slinder dark
unique	bold dark M pattern on upper wings	very narrow pointed wings, sloped forehead	roudned head	broad-winged w/ heavy wingbeats	heavy pink bill on dark brown body	thin pale crescent behind dark cheek

Sources: Cornell Lab of Ornithology, The Sibley's Guide to Birds, Sibley's Birding Bascis, The Sibley's Guide to Bird Life & Behavior