I have 5 Muscovies that are about 9 months old. I cannot tell if they are females or males, but they are all the same size/body shape. Today, when I fed them one of them came up beside me and I put my hand on his/her back and he squatted down against the ground. I am wondering if this is the same as the submissive squat that hens do when they are receptive to a rooster? This is my first time raising Muscovies and I'm anxious to find out if this could be a giveaway that I have females?