My cockerel (possibly blue copper maran) has started falling asleep constantly. He’s still active, gets up to eat and drink but then stands there and falls asleep standing up. He’s dozing off constantly. Otherwise he seems totally fine and his comb is bright red. It has been a bit warmer than usual the past 2 days but nothing scorching. He also has had issues early on where he wasn’t walking normally but the vet said likely just growing pains because he couldn’t identify any illness. Last night I went to make sure they were all in their coop and he was out in the run totally asleep (& my buff Orpington wouldn’t leave his side). I gave him a dose of nutridrench & rooster booster last night and just added some electrolyte water for everyone. Anyone experience this before?