Hi all! The past several nights around 8pm I head into the coop to lock it down for the night (the girls are usual roosting or getting into position at that point) and have noticed several of them are panting. Now I know this is a sign of being overheated but its just not that hot, maybe 75 degrees. They are a little over 11 weeks, could this be a sign of maturing or do I need to rethink my coop ventelation? Thanks!