Seems to fight for air, as if it took too big a gulp of water except this behavior seems independent. Could gapeworm be a problem at such a young age? The same chick at 3 days old was showing signs of pasty butt, and I treated with 1 tsp of Corid per gallon water, fearing Coccidiosis could set in. My 8 week chicks got wiped out by Cocci last year and I was hoping to cut that off at the pass. More information: This chick is brooded buy a chicken hen and was hatched by a chicken. It has two other siblings who seem fine, no symptoms. (I know, I know, shouldn't keep peas and chickens together). It is what it is. Is Corid an acceptable antibiotic if it is Cocci or blackhead? I have Safeguard dewormer which has fenbendazole which addresses blackhead, also, right? Or should I get an different antibiotic? I don't think a vet will prescribe me flagyl (metronidazole) unless I bring this chick in and I was hoping to avoid doing that step yet.