Kittlitz's Murrelet
25 cm (10") Fairly common. Pacific Ocean. Nests inland, often in trees. Small alcid. Short thin bill.
Breeding: dark brown and heavily mottled.
Fall and Winter: dark above, light below. White line between back and wing.
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Credit: U.S. Fish & Wildlife Service
Images
Credit: R. Lowe/USFWS
Credit: Guy Monty