First, I am really sorry for your loss. It stinks when something sneaks in and hurts, takes, or kills our birds. I lost one of my favorite Pekins to a fox a few weeks ago: She was sitting in the pasture sunning herself one minute and a few minutes later I heard a ruckus, went to check and all that was left was a pile of white feathers. I followed them into the woods, but lost the trail. The fox had found a break in my fence that I didn't know was there. So, now I walk the fences twice a week without fail to check for breaks or signs of digging.
If you have the room you may consider getting a goose to keep with your ducks: I have 16 of them (they alerted me to the fox invasion). If the noise the ducks make doesn't wake you, I guarantee the noise from a goose would. Also, a lone raccoon would have a really hard time taking down a large breed goose. It sounds like you possibly have a mother with young on your hands (teaching them to hunt). A pack of coons may bring down a goose, but as I said, you would surely hear that attack as the goose would be honking its head off.
Good luck and I hope your new ducks stay safe.
If you have the room you may consider getting a goose to keep with your ducks: I have 16 of them (they alerted me to the fox invasion). If the noise the ducks make doesn't wake you, I guarantee the noise from a goose would. Also, a lone raccoon would have a really hard time taking down a large breed goose. It sounds like you possibly have a mother with young on your hands (teaching them to hunt). A pack of coons may bring down a goose, but as I said, you would surely hear that attack as the goose would be honking its head off.
Good luck and I hope your new ducks stay safe.