We ordered our ducks from efowl hatchery months ago, and finally they arrived a little less than a week ago. But, the issue is, after we'd had them for three days, suddenly, seven ducklings were acting weird (not eating, sluggish, etc.) and then just died. The same happened in similar fashion to fourteen of our other ducklings. No idea why this happened. We only have two ducklings left, one looks like we may be able to lose her, and the other one looks totally fine. What do we do? Especially if we lose the sick one. Is it even possible to raise a single duckling by itself?