Yesterday I had to cull a Sebright chick for Marek's symptoms (paralysis). Today the other Sebright chick has been acting strange. Unlike the other chicks with wide open eyes (no eyelids showing), I can see her eyelids a little bit and she's been opening her beak all day. She doesn't make any wheezing or chirping sounds , but seems to be panting (today is much less hot than it's been here in southern California, so I don't think it's heat-related). Maybe I'm just paranoid and heartbroken since I feel so worried about Marek's spreading! Any advice you give will be greatly appreciated. Thank you.