I'm sorry she is not doing well.
The only way to know for sure if she has Marek's is to get some testing performed. Your CA State Lab is reasonable in pricing from what I understand. If you cull her, refrigerate the body and send her in.
Here's a very good detailed article on Marek's
http://www.backyardchickens.com/a/the-great-big-giant-mareks-disease-faq
The only way to know for sure if she has Marek's is to get some testing performed. Your CA State Lab is reasonable in pricing from what I understand. If you cull her, refrigerate the body and send her in.
Here's a very good detailed article on Marek's
http://www.backyardchickens.com/a/the-great-big-giant-mareks-disease-faq