Hi I have a frizzle that will be 4 weeks tomorrow that has me concerned. I bought eggs from Ebay and hatched 2. One chick is perfectly fine and growing, I have given it to my hen that hatched 7 eggs a few days after my 2 incubator babies. The 2nd baby has not grown. The feathers have changed and the baby is very talkative, and eats and drinks fine. Aside from not growing the baby has a congested sound when breathing and cannot walk on its feet. It walks on the lower portion on it legs. I have separated the baby from the rest about 2 weeks ago at 2 weeks of age because it would shiver and wasn't growing. After a day or two it stopped walking up on its feet and the feet appear to be crossed.
I have given the baby supplemental heat, vitamins, probiotics, electrolytes, vet rx in the bedding and under the wings and acv as well as fresh food and water daily. One day when I would tip the baby on it's back it would shake its head real fast but no longer does that. I called my vet and he said it is probably Mareks disease, but can they get it from mom before hatching? None of my other birds appear to have problems. I have 2 roosters about 8 months old (I hatched ), 2 peking ducks 8 months (I hatched), one 8 month old hen (I hatched) and 1 hen that is 1 1/2 years bought from TSC. Please advise if you have any suggestions as to what may be wrong.