I have 3 Pekin ducklings and one of them I noticed seems like he doesn’t want to walk. I might just be overthinking it but I am a little concerned. They are fed Purina Flock raiser and I add brewers yeast everyday. I have Durvet Vitamin B complex and I was going to give them some mashed bananas as a treat and put the vitamin b complex on it but I can’t find any chick grit near me and I know they need it if they’re having anything other than their normal feed. I checked every TSC near me and the only option is to ship it to me. I don’t know how else to give the Vitamin B complex if I don’t put it on treats. So frustrating that I can’t find chick grit! What can I do here?