Hi
arbitraryduckmom
Welcome to BYC. So sorry to read that your drake was killed by a hawk. I always tell myself my drakes are too big to worry about hawks, but I worry about owls as we have huge barred owls and grt horned owls in NE Florida where I live.
It sounds like you are doing the right things to protect your remaining drake and his future companion
I am delighted that you want a drake companion!! I rescue, rehab, and rehome ducks and too often I am rescuing drakes that are dumped on retention ponds, or just at the side of the road. Because of drakes sexual appetites, backyard flocks have to include 4 or more female ducks per drake. But drake only flocks are fine. My own flock is 3 muscovy drakes and a special needs pekin drake. Three have been together since September 2021 when two of the muscovy were 6-8 weeks old and the special needs pekin was nearly 5 months old, but just recovered from a nasty raccoon attack that killed his clutch mate. The fourth, a young adult muscovy, Butter, joined the flock at the end of December 2022. He had been ostracized by his flock mates, who had begun favoring the other drake in the flock. His human parents weren't able to find him a home locally and so brought him 60 miles to me. I love him: my first all white muscovy.
Butter was see but no touch for a week. Then I started him on spending some day time with one of my muscovy before integrating him fully. I keep new arrivals sleeping in dog crates in the coop for longer than the see no touch period. I have had many other drakes during the years I have had an all drake flock and rehomed the last two in December, just before Butter arrived. It is very difficult to find new homes for drakes, not only because of drake to female ratios, but becuase many people don't want a drake that eats food but does not repay with eggs.
arbitraryduckmom where are you based? You might find a drake offered on your state thread on Backyard Chickens.
https://www.backyardchickens.com/threads/find-your-states-or-your-countrys-thread.270925/
In some states the local Humane Society and or the chapter of the Society for Prevention of Cruelty to Animals re home ducks. You might contact them , and even animal control, to see if they have any drakes needing adoption. Some wildlife rehabbers may have a drake they can let you have. Not all rehabber take domestic varieties of ducks and in Florida many rehabbers will not take muscovy. But try your local rehabbers.
Try social media -- NextDoor, Facebook market place, or craigs list. you should not have to pay much for a drake $5 perhaps but many will be free. You can advertise on social media if you don't see any being offered. In NE florida there is a NE Florida Farm and Garden group on Facebook. Its a private group but if you are in NE FLorida, find it and apply to join then you can advertise there.
Good luck and let us know how you get on!