Can anyone give me guidance... my 14 week old rooster I noticed was off by himself laying in shade acting weird with labored breathing. I picked him up without a fight so I know something is wrong. I thought maybe heat so brought inside put fan on him gave electrolyte water and rooster booster b12 shot bc he wouldn't drink. He then started gasping and pooped this yellow egg yolk looking poop. I have separated from the rest of the flock but any guidance would help.