Flock dying with tremors

[Chicken Review]

A friend of mine has just contacted me with this problem. I do not have an answer for them. The chickens are free range and mostly older chickens.

"I've had two hens die in two days. I have given entire flock antibiotics. They don't act sick long. They get where they can't walk then they die. The only other symptom is they loose their color. Any suggestions? Worried about my babies.

3 more chickens sick..heart is breaking..new symptom is tremors (whole bodies shaking), can't walk well and they fall over like they have no balance..gave them antibiotics"..

Any help will be appreciated.

http://www.chickenreview.com

 

[Eggcessive]

It's hard to say exactly what the problem is without sending one of the birds into the state vet for a necropsy. Some diseases that possibly could cause this would be aspergillosis, aflatoxin poisoning, botulism, Mareks disease, or poisoning from lead or other toxin. Below is a list of common diseases and symptoms, and 2 links to finding the KY state vet.
http://edis.ifas.ufl.edu/ps044
http://www.kyagr.com/statevet/
http://www.aphis.usda.gov/animal_health/animal_dis_spec/poultry/states/kentucky.pdf