I have a 1 1/2 year old Welsummer hen who started staggering when she walks last Thurs. She is also in a heavy molt. I took her to the vet on Fri. and she stayed overnight. No blood tests were done, just a general check up and a fecal exam. She is healthy, eating and drinking, no parasites in her poop, and no physical injuries, except for the staggering and the molt. The vet gave me Neo Calglucon syurp and 100mg Tylan powder for her. I have her seperated from my other hens, four other Welsummers and a Leghorn. One other Welsummer is also in a heavy molt. I feed them Layena, scratch, and let them free range in the yard. Has anyone else run into a problem like this? The vet mentioned Mareck's disease but I opted out of expensive blood tests for the time being.