What coop boss did for ship's company (4)
I believe the answer is:
crew
I believe this is a double definition.
'what coop boss did' is the first definition.
(past tense of crow, to make the noise of a cock)
'ship's company' is the second definition.
(I've seen this before)
'for' acts as a link.
(Other definitions for crew that I've seen before include "They operate ship or aircraft" , "Sailors - haircut" , "made triumphalist noises" , "Ship's sailors" , "Staff of boat" .)