Not laying & dying off

[greenas]

We currently have 4 brown shavers & 4 silver lace wyandotts.
All stopped laying over four months ago.
They have an auto feeder & waterer. I clean out their poop every day. I change their water weekly. They have peck n lay & daily scraps. They have hay & wood shavings in their generous coop.
We've become a rehoming station so I'm not sure the ages of the chickens. The wyandotts appear in good health but the shavers look straggly & are dying one by one.
My husband thinks they may have mites on their legs. There is a runny poop or two the coop daily. It starts with their general appearance deteriorating & malting then their crown goes floppy.I have found three over the past three months dead in the coop. Now another chook is following suit & she is limping too. I'm not sure what could be wrong. What can we do???

 

[Suzierd]

Here's a list of diseases And symptoms you can look over that may help. Check out mareks disease. I'm sorry to say being a rehoming station is a bad idea your bound to bring in something nasty. I would take one of the dead ones in for testing then you know for sure what your dealing with. Good luck
http://edis.ifas.ufl.edu/ps044

 

[Suzierd]

Quarantine the sick ones right away hopefully you can save some. I hope it's just a bad case of mites.