This is just the opposite of the iguanas falling dead from the trees on sidewalks in FL when it gets really cold. I think they are the result of people releasing pets when they no longer wanted them and they bred to being a common site. Extremes do take a toll on so much of the worlds wildlife.
I can remember opening the door to go to work while living in south central FL and getting knocked back inside by the heat and humidity June - September. It's hot up here but better winters than TN and better summers than FL. I don't know why my ancestors moved south from here unless it was the...