When I went out to the coop this morning I found a hen laying on her side under the roost. She wasn't able to get up on her own. I picked her up and set her on her feet and she promptly face planted onto her side again. It appears her left leg is not working properly. She has no interest in food or drink and is quite lethargic. I have isolated her to my dog crate, and she did take a few steps on her own to the back corner. I suspect Marek's, any other thoughts?