I have two Cayugas (F) and two Ancondas (M & F). I thought I only had one male in the bunch, but my one Cayuga keeps humping the other one! I fully support their lifestyle, and don't want to get in the way of true love, but at the same time, if it's just a whacked out drake, that's too many drakes for 2 females to handle. The duck in question (Moss is her name) keeps humping Fern, but doesn't have any other characteristics of being, well.... male. No curly feathers. They're both the same size. What gives?