Long-necked diving seabird with mainly black plumage (9)

I believe the answer is:

cormorant

(Other definitions for cormorant that I've seen before include "Diver" , "Black/white fish eater" , "Diving coastal bird" , "Large, long-necked seabird" , "Large voracious sea bird" .)

I've seen this clue in The Mirror.

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