This is my 3rd post about this so sorry for that but I just know someobody has to have some input or experience like mine somewhere! I have 2 muscovy ducklings from the same hatch 2 weeks old. One looks normal. The other is very small. Not only that but she is puffed out. Not the feathers but the skin, like she is retaining fluid. You can push the skin around her neck and down her back and belly about 1/ 2" in. Feels like a blow up toy. Doesn't seem to bother her at all except she so round her little legs keep splaying out when she walks on any semi smooth surface. I know people with kidney failure retain water, does anyone think this is what could be happening? I would love to help her and treat her but feel very lost and confused. Can't find ANY info about anything even remotely close to this. ??? Anyone?