Auk family member (9)

I believe the answer is:
guillemot
(Other definitions for guillemot that I've seen before include "An auk" , "Seabird" , "Diver" , "Diving bird" , "Fisher" .)
I believe the answer is:
guillemot
(Other definitions for guillemot that I've seen before include "An auk" , "Seabird" , "Diver" , "Diving bird" , "Fisher" .)