So, I have 3 mallard ducks and 2 of the females have been nesting (one of the females eggs just hatched) and they both seem REALY thin. Like under a pound and I can feel there bones. My drake seems to be a normal weight though. Is it normal for nesting ducks to be really thin? Also the one that doesn't have babies yet has a lot of missing feathers in the back of her neck and she's acting kinda crazy. Thank you any help is appreciated?!!