My muscovy drake used to be the sweetest thing. When he turned about 3 months old that all changed. Maybe I babied him too much because now he's turned into a demonic duck from hell! Lol! He bites for no reason at all and will stand his ground if I charge at him and try to scare him away. I heard sitting on them will show them who is boss. I tried this on my other drake and it works well, but it seems to have no affect on this particular one. As soon as I let him up he starts hissing and biting at me. Is there anything else I can try? It's gotten to the point where I don't even want him anymore, but I feel bad giving him away to someone if he acts like this. I've heard this is a phase they go through, but I'm seriously considering cooking him up for dinner.