My barred rock hen was normal (running, eating, scratching, etc) yesterday. This AM she is having trouble standing up - she falls over to one side. When I tried to catch her to examine her leg, she scurried away, not as fast as normal, but both legs appeared to "work" fine. When she slows down though, she falls over to one side (always the right side) and then catches herself with her wing, gives up and lays there. Her legs look and feel normal and she doesn't act as though she's in pain. Her comb is bright red, as normal, eyes are clear and she's alert. I am not sure if she's eating and drinking normally as I was at work today - but observing her for a couple hours this evening, she'd rather just lay on one side than peck/scratch around with the others. If she does move around, she "spins" in a circle like she has a flat tire.
A couple other possible factors:
1)
About 3 weeks ago, I noticed some small bugs in one of the nesting boxes (I have 2 coops, 5 nesting boxes total) so I cleaned EVERYTHING out of both coops, treated with DE and put fresh bedding, etc (pine shavings and straw). No more signs of bugs.
2)
About 4 weeks ago, we had record breaking heat (100+). I kept water out for them, they have plenty of shade and also ran a sprinkler to keep the earth wet/cool.
I moved to a new house 1 year ago and we had 11 hens. We have recently lost 4 in the last month...and now this girl is not well
Could they be getting to a poisonous plant I am not aware of? Could this be a delayed reaction to a type of heat exhaustion?
I feed them organic layer, oyster shells, scratch and fresh fruit/veggies. They free range during the day and are locked up tight at night.
Any thoughts/advice very appreciated.
A couple other possible factors:
1)
About 3 weeks ago, I noticed some small bugs in one of the nesting boxes (I have 2 coops, 5 nesting boxes total) so I cleaned EVERYTHING out of both coops, treated with DE and put fresh bedding, etc (pine shavings and straw). No more signs of bugs.
2)
About 4 weeks ago, we had record breaking heat (100+). I kept water out for them, they have plenty of shade and also ran a sprinkler to keep the earth wet/cool.
I moved to a new house 1 year ago and we had 11 hens. We have recently lost 4 in the last month...and now this girl is not well

I feed them organic layer, oyster shells, scratch and fresh fruit/veggies. They free range during the day and are locked up tight at night.
Any thoughts/advice very appreciated.