Dominant drakes are a bit rough. Usually its tail wagging and Haha's but if both are dominant, they fight. Take it slow, your older fella may accept him but they will have a dispute at some point. slow controlled introductions is your best bet or a grow up area thats see, can't touch the duckling.
Thank you. He is in an area that they can see each other. Bob backs off when I start yelling now so maybe he isn't as aggressive as I thought. I only have one Muscovy hen and Fred is even afraid of her. These are my first Muscovies. I have some eggs in the bator now that I hope turn out to be girls for Fred
Sending hatching vibes!