Here is the story. We had a muscovy hen which hatched out 10 babies last week. She is already down to five. For some reason, our hens just do not have good survival rates when allowed to raise their young. So I now (unexpectedly) have five baby muscovy ducks to rear. I went to one local feed store and they didn't have game starter or anything for waterfowl. I went to another one and they were sold out of game starter. I bought some 16 % layer crumbles and thought I might supplement with a little boiled pulverized chicken egg, at least until I can find something more suitable. Will this make up for the protein shortage? (I had read that they needed around 22 % protein to start. Also, would I need to still supplement with niacin? I have read that eggs have about .1 mg of niacin/ cup. I am not sure what that equates to per egg. The ducklings do seem to like the eggs. Also, how much egg would you give for five ducklings (about 4 days old)? One per day?? ETA: Ok, I found something that said .03 mg niacin/ egg.