We are in VA and have 5 laying ducks since last September and have only skipped a day or so even in the extreme cold this past winter. As of a week ago, we dropped to 4 eggs and then 3 eggs now today 2 eggs today. We only have female. None act Brody. One has gone off to make nests in random spots in our yard but not sitting in any of them. Nor has she laid an egg in any of them. They appear healthy, foraging well, eating normal amount of feed. Feathers, eyes, bill, vent, legs, feet all look good. Getting vitamin water also. That whole mite thing still a concern but cleaned everything in coop and no sign of mites. No more bites on us either. (Thinking a farm we visited is where we got the bites!) we have 4 ducklings that are not kept with them and they appear healthy as well. Khaki's, WH, and runners are the breeds we have. The only thing I see that the adults do that I can't figure out is they kind of flutter their wings when they are standing still. Sometimes when they are sitting. It's like they twitch their wings, like relaxing them then twitching them back up to normal position. Is this normal? And could they be just taking a break with laying? Is the wing thing related? I have provided ACV in with water too.