Hi, I’m raising 4 female Pekin ducks that are just past 3 weeks old. They are all pretty much healthy except one that I have been noticing has been having very liquidity poops. She is one of the more outgoing ones and has still been gaining weight, swimming, and eating, but my only concern is if there are any underlying issues that cause the runny poop. She is the only one out of the four that has this. All 4 ducks are on 18% feed with brewer’s yeast supplement. Wondering if anyone had any insight on what could be causing this. Thank you.