So, I've been raising a Muscovy from a chick for a little over a month, now (about 6 weeks). I'm almost certain she's female, because she already has a lot of tail feathers, her wing feathers are almost grown in, and she has what someone called a "female beak" (more narrow and a prominent ridge). I bought a new Pekin, because I didn't want my duck to be lonely. I'm pretty sure he's a drake, because of his tail feather curl. But, whenever I leave the two alone, I hear him cry out, and she's chasing him around their enclosure, biting him. Sometimes it looks like she's grooming him, but other times, she's clearly attacking him, and he will scream. Currently, I have her separated, in the old fish tank i used to have her in, and the tank is inside the enclosure, so they still get to see each other. I thought it was usually drakes that bite each other for dominance? Is this just the pecking order being established, or should I worry about what she's doing? I do see him bite back sometimes, but that's only if I've been there long enough to make sure she doesn't do it.