Ancient murrelet Synthlibormaphus antiquus

Identification Tips:

Adult alternate

Adult basic

Similar species:

In all plumages, the pale bill, black chin, and the contrast between the black nape and gray back are each distinctive marks.

Length and wingspan from: Robbins, C.S., Bruun, B., Zim, H.S., (1966). Birds of North America. New York: Western Publishing Company, Inc.