Hi everyone! I am not new to baby chick brooding, but I am new to summer brooding. I have just picked up 2 silver laced wyandottes from Meyer Hatchery. The two new girls will round out my flock total of 15. The older hens are travelling around the yard in portable coops until winter. The new chicks are being brooded in winter coop, which has been adapted for chicks. To my question: how on earth do I manage the temperature of the coop? The outside temperature can be over 90' one day and then 80' the next. The evenings range from 60' to 80'. On the hot days, do I have to keep a light on? I'm afraid the chicks will cook. Any suggestions? Thanks.