I'm getting buff and lavender orpington chicks in March and was wondering how best to keep them cool in the summer once they're able to move into their coop/run? Where I live, summer tends to be in the low 90s but it's not surprising if it gets to 100. Coop has plenty of ventilation, they'll have plenty of shade in the run, and I plan on adding a kiddie pool with shallow water on hot days that they can walk through. Anything else that I can do?