my pet chicken (americana) is almost 16 years old and is the last of 9 chickens. I been bringing the chicken into the house every day for a few hours to pet it and feed it treats. last week I brought the chicken into the house and it collapsed, so i rushed the chicken outside and laid it on the ice cold cement. it came back to life so i took it back to the coop. a few days later i was in the coop, i put the chicken on my lap to warm its feet and after about 1 min. the chicken had another seizure, the chicken goes limp for about a min. as i rushed it outside and laid it down on the ice cold dirt with cold wind blowing. the chicken revived again. at first i thought it was heat stroke from bringing it into a warm house from 40* coop? now i think it has diabetes? one of its eyes is grey, the chicken was seeing invisible things for a couple of years before the eye went grey. I filled its water with a vitamin mix and today the chicken seems fine. now i am scared to touch it as it might have another seizure. so any slight raise in body temp and the chicken has a seizure? not sure if its a seizure as the chicken just passes out then kicks then goes limp. does anyone know what causes this?