Me either GQ, I don't even feed my ducks live fish. lolMuscovy definitely eat.. rodents, as a matter of fact so do many ducks and chickens, not long ago the Pekin took the mouse off the poor barn cat(shows how kind he is to them, he is a fighter just not towards my birds)
Though i will admit i would never purposely give the ducks anything of that sort, sorry just not my thing lol