We had ducklings hatch about a month ago, everything seemed fine until I noticed our white duckling falling over and bumping into things about a week ago. I have her inside and she can't see at all, I waved my hands right in front of her eyes and she didn't move her head whatsoever. She has a hard time finding the food and water without the other ducks help. She wasn't blind until about a week ago. I'm thinking of keeping her inside until it gets better. Or keeping her inside for good. What should I do?