I don’t think I can keep a family of eagles from attacking the ducks whenever they want. The geese can give a warning, but I just don’t think that gives them enough time to get under cover especially when the trees have no leaves. There are 3 eagles all together. 2 adults and a juvenile. I am hoping they will move on after the lake freezes and the last of the wild ducks move on. So far they don’t seem able to catch any ducks on the water. The mallards fly off and the mergansers just pop under water. For now, despite their loud and constant protests, I will have to keep the birds in their run.