The three month long heat/humidity combo that none of my birds have ever experienced before this summer did something to him. When he gets excited and chases the girls, he turns dark and can't breathe. He's also lost weight, I noticed. He's been in the house for a week till today, getting misted with Oxine, in case he picked up a fungus, and he sounded completely normal crowing this morning. I brought Caroline in and put him in with the girls. He started chasing them and immediately turned purple and was having trouble breathing. I think his heart is damaged. Some of the older girls had breathing issues in this weather, but none have had color changes like Isaac. If he can't breed or care for the hens, if he's going to keel over dead if he does normal rooster stuff, I can't put him back with the hens; or maybe I should, really. Then, if he dies suddenly while doing what he does best, maybe he'll go out doing his job and I won't have to think about doing it for him.
Right now, he's out running loose, trying to figure out how to get back in with his women, flirting and dancing outside the fence, fussing with Suede until he sees me with the hose in my hand. What do you guys think?