Rita, my speckeldy has been mopey for about a week with watery pooh but eating especially her favourite probiotic yogurt. She only started laying 4 weeks ago but hasn't laid for about 2 weeks now. I thought it was the cold weather or starting to moult - there have been a lot of her feathers in the coop this week. Yesterday when I let them out to range she stumbled out and couldn't walk without losing her balance. I've kept her on her own in the run because the others pecked her when she fell over. Same today so I've given her growers pellets for protein mixed with probiotic yogurt, vit E and crushed vit B complex. After looking through the threads I'm worried it could be Mareks she is about 6months old or could it be the moult? Any suggestions would be appreciated she is a lovely hen my favourite actually. I just read about riboflavin deficiency but I've always put vitamins and acv in the water but just in case I've given her 2ml of Nutridrops.