Mainly black aquatic rail (7)
I believe the answer is:
moorhen
(Other definitions for moorhen that I've seen before include "pond bird" , "Black freshwater bird" , "Black waterbird" , "Bird - hormone (anag)" , "Female red grouse or waterfowl" .)
I believe the answer is:
moorhen
(Other definitions for moorhen that I've seen before include "pond bird" , "Black freshwater bird" , "Black waterbird" , "Bird - hormone (anag)" , "Female red grouse or waterfowl" .)