I have a 9 month old EE hen who all of a sudden won't move, is squatting with tail down and panting. I've felt her all over, don't feel any obvious mass or egg stuck. She laid a perfect egg yesterday. She is semi free range (supervised) so I guess she could have eaten something bad for her. Earlier this afternoon she seemed to be fine, by evening panting and lethargic. I gave her electrolyte water by syringe (she drank), made a cooked oatmeal and chick starter mash, soaked her rear end in warm water and put her in the hospital pen with a chick heating pad. Ideas what could be wrong? She's wheezing a bit but no discharge at all. More like fast panting breathing wheezing. She let me carry her in the house and hold her in a towel on the couch - no way would she ever do that if she weren't so sick I did clear out their coop yesterday - lots of dust. I let it all settle before they went in for the night and it's well ventilated.