You could make it a selection for the player, they choose one then the other is destroyed in a comically horrific manner. The narrator could berate the player for so callously destroying the unchosen duck who clearly has a deep and tragic back story and has long lost relatives who will sorely miss them. The duck you choose may turn out evil or maybe somehow the worst, just an awful duck who you should not have saved. The Duck Linked Content could be an included DLC.