Start doing what others advised you to do for your Roo, it's all probably the heat and hopefully you caught this one sooner. You should probably give some electrolytes to all your chickens as a precaution. Hopefully more will respond with more advice ....
@WVduckchick @Ravynscroft @azygous @casportpony
@WVduckchick @Ravynscroft @azygous @casportpony