I feel your pain!!
I'm sorry to hear about your girls. We're going thru that same problem. I had a pullet die a couple days ago. She started out unstable, lost a huge amount of weight, was eating but very little same with the water. Then a week later just got worse couldn't walk, eat, drink and kept her head back. We had to put her down it was just getting horrible. I found another hen last night acting the same way but this hit her within an 8 hr period. I'm driver her up to the State Poultry Lab tomorrow so they can run tests.
I completely hate it right now!! Again I'm sorry about your loss and hope things get better!!

I completely hate it right now!! Again I'm sorry about your loss and hope things get better!!
