I had a 2 acre lake outside my door for a couple of decades.
The lake had a lot of big bass.
In the spring when the moma duck would take a clutch of hatchings down to the water , usually 22-24 hatchlings, they would be 80% gone by dark. The bass just tore them up. usually when it got down to one or two she would herd them around the shallow edge and sometimes even the last two would be gone in a couple of days.
Then they would have to do with the egrets. They will hit and swallow a gosling in a heartbeat.
I dipped four tiny ducks up in a dipnet to raise them. When they were 3/4 grown, almost ready to release, a racoon got into the pen and got two of the 4. These little dudes have a hard road when they hatch.