Aquatic bird of Europe, Asia, and North America with dark plumage and a white bill and forehead (4)
I believe the answer is:
coot
(Other definitions for coot that I've seen before include "Black waterbird" , "Waterbird of rail family" , "Slow-flying bird, resembling a duck" , "Proverbially bald aquatic bird" , "'Slow-flying, duck-like bird (4)'" .)