My duck Rebeccah went to bed fine last night. This morning when I opened it up, the other two came out as normal but she just sat there inside. At first I thought she may be laying as I tend to get both eggs in the morning (I have 2 ducks, 1 drake). She then fell down the ramp and couldn't seem to stand. I picked her up and carried her to the food / water. She has been eating and drink fine but won't walk. She seems able to stand more so now. I've checked and I can't see any obvious injuries. Can anyone suggest what it could be or what I should do? She's just sitting by the food and water accessing it when she needs it. The Ducks were hatched back in March by incubator and started laying last two weeks. Rebeccah was a little disabled as a duckling but made good improvements with Brewers yeast. They are now on layers pellets. Sorry for long post am worried about her.