So, let me start by saying my chickens are like my kids....they even tend to wander into the house from time to time. However, I have had several in the last 2 days become listless and not walk, arch their head over. I have separated them and taken them to what we call our hospital (hay barn). Our chickens are mainly free range and are giving layer crumbles. Their pen is in between 2 sets of pig pens. The pig pens had ticks which we have treated. Not sure what else to do. Thanks in advance for your help. Oh, we have had a lot of rain in the last month, but all is dried up.