Another thought on this...you would think that the grower wouldn't have packed you a duck that was gimpy. But since the ducks arrived with one dead and one injured, it may be a physical injury from the box being shaken/dropped during shipment. The Gimper could have been one of the weaker ducks...
Miss Lydia,
My apologies...I certainly meant no offense. But I'm trying to break this down.
Since they usually ship ducklings before they are even eating, and the poster says his duckling arrived with the leg problems (before it was even eating), I thought it veers to more of a genetic problem...
They are all eating the same food, right, and the other ducks don't seem to have a niacin deficiency? Could it be that your problem duck has some problem with the way his bones have grown in his feet and possibly legs? Could you take pics of him from different angles and post them here...he's...