Range / Habitat: Exclusively marine, breeding along sea coasts on rocky cliffs and offshore islands throughout the subarctics. In winter, generally pelagic in the same waters.
Field Notes: Medium-sized waterbird with black to dark-brown head, neck and back. White underparts with some dark streaking on the flanks. Bridled or ringed morph, restricted to the Atlantic, has white eye-ring and post-ocular stripe. Non-breeding adults have white on face and throat. Thick-billed Murre has a white line on the gape, is blacker on the back, and lacks streaked flanks. Razorbill more stocky, with stouter bill lined in white.
Personal Notes: Seen huddled in large clusters against the wind on the Latrabjarg cliffs in western Iceland.
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