We were pretty aware of our evening predators from the get-go here. My inlaws got Peking ducks they kept in basically a tiny box at night. The predators just opened the door as if it were a refrigerator door in the middle of the night and snacked at their leisure. They took 3 days to kill 6 ducks. It was a horrible mess that took a week to clean up. The following year we got our chicks and 2 Mallard ducklings and hubs built a coop to keep them just at night After a few months we went out one morning and found the female duck missing. A predator tried and tried until he found a weak spot in the bottom and ripped through the wire and grabbed my duck. That day hubs dug a trench around the coop and buried new wire on the bottom and added a 2X6 board then added bricks at the base. One year later and nothing has succeeded in getting in. We have 2 raccoon traps that we use to catch anything that comes near. One summer we caught 14 Opossums and 8 raccoons.
My drake has since bonded to me, but then moved on when he realized I wasn't interested. He sorted them out and picked one hen to breed. A lack of success there has him searching the hens again for one to mate. It's a hassle keeping ducks with chickens sometimes, but I have yet to get rid of him. He sure is entertaining although I wish he'd actually use the small pond hubs dug out just for him. I had to put up a fence around my water lily gardens to keep him out. He refuses to use his own pond, but the toads sure love it and it's producing an invasion of toads for this year.
Where do your ducks sleep now? If they don't have a coop then they'll try to sleep in bushes or thick patch of weeks to hide, but predators will find them before they have a chance to fly away.
My drake has since bonded to me, but then moved on when he realized I wasn't interested. He sorted them out and picked one hen to breed. A lack of success there has him searching the hens again for one to mate. It's a hassle keeping ducks with chickens sometimes, but I have yet to get rid of him. He sure is entertaining although I wish he'd actually use the small pond hubs dug out just for him. I had to put up a fence around my water lily gardens to keep him out. He refuses to use his own pond, but the toads sure love it and it's producing an invasion of toads for this year.

Where do your ducks sleep now? If they don't have a coop then they'll try to sleep in bushes or thick patch of weeks to hide, but predators will find them before they have a chance to fly away.