- Puffinus puffinus
34 cm. Blackish or dark brown upper parts, white below, white wing linings, white crescent behind eye, short tail.
Audubon's Shearwater is slightly smaller with shorter less-pointed wings, dark undertail coverts, and white spot near eyes.
Cory's Shearwater is much larger with much lighter brown body and wings, heavy yellow bill and white tail band.
Great Shearwater is much larger with lighter body, smudgy brown belly, neat cap, narrow pointed wings. and white tail band.
Outside breeding season disperses to southern Atlantic. Since the 1970ties have been seen as a rare but increasingly regular bird in eastern north Pacific.
Up to seven other species has in the past been treated as subspecies of Manx Shearwater.
Strictly pelagic when not breeding, usually off-shore rather than oceanic
Glides and banks low over the water on stiff straight wings, with very irregular wingbeats
Nests colonially in burrows on grassy slopes of islands, often at some distance from the sea. Visits burrows after dark
<flashmp3>Puffinus puffinus (song).mp3</flashmp3>
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- Clements, J. F., T. S. Schulenberg, M. J. Iliff, D. Roberson, T. A. Fredericks, B. L. Sullivan, and C. L. Wood. 2014. The eBird/Clements checklist of birds of the world: Version 6.9., with updates to August 2014. Downloaded from http://www.birds.cornell.edu/clementschecklist/download/
- Collins Field Guide 5th Edition