This morning when I was cleaning the brooder and doing the normal 'chick socializing', something unusual happened. I am inclined to consider this a "Grand Mal" seizure; I assisted with a dog that had frequent Grand Mals and I know that parrots can get them, but quite honestly I don't know for sure if chickens are susceptible to this or not. Perhaps someone can provide some input! Can chickens have Epilepsy? I have found a few other threads where people have talked about it but it seems rare. Age: 11 days old Breed: Partridge Cochin (large fowl) Origin: Day old chick shipped from Meyer Hatchery Merek's Vaccine: Yes Exposure to other birds: No, these are my first chickens. Brooded inside on kiln-dried pine shavings. Brooder is kept about 90°F on one side and 75° on the other end. Feed: Countryside Organics chick starter (triple checked, clean and free of mold), occasional treat of mashed egg yolk with yogurt Water: Clear with a little raw ACV. (All other chicks seem very healthy, active, alert. She is with 7 other chicks, same age, same origin) Symptoms: Completely active, healthy chick. Alert, bright eyed. She suddenly gave a loud, strangled Peep! And her legs kicked back all the way and her head curled back against her back all the way. She was completely rigid, and unable to even blink. The seizure was strong enough that her eyes watered visibly. I held her and waited for it to pass, and she went unconscious. At this point I simply kept her head from drooping too far down and kept her warm. She woke up, seemed surprised to be in my hands, and tried to wiggle loose. I put her back in the brooder to observe her and she was totally 'normal' with the exception of seeming a little dazed; she walked around trilling for about 5 minutes then settled down, looking around alertly. The seizure itself lasted perhaps 30-60 seconds and she was unconscious for about the same amount of time (maybe one minute). I have a webcamera on the brooder so I can watch them while I work and this is the first time she's had a seizure. She is currently acting normal, alert. No additional tremors or loss of coordination. I have read aboutAvian Encephalomyelitis , and the symptoms do not seem to be the same as what I experienced with this chick. Any thoughts? We really like this little lady and if there is anything I can do for her we will do it.