I want to thank everyone on this board that contributes their knowledge to help those of us that are just getting started. I have 2 ducks that were having problems. My female roeun wasn't growing, was having a hard time standing upright and it's feathers weren't coming in right. My Khaki just stopped walking. Thanks to now understanding the niacin requirement for ducks they are both on the mend. THANK YOU SO MUCH!!! The last time I tried my hand at ducks I hadn't found this site and all of them died It is going much better this time.