Ok, I ordered three EE chicks from MPC and delivery is next week. *CAN'T WAIT!!* But going through the posts, I kept running into stories about the extra chicks added for heat. How often does that actually happen? And how likely are they to add extras to mine??? I could keep the chicks for a while but my coop is not legally big enough for more than the three that I ordered. They're coming into Denver, if it makes any difference. Thoughts, experiences???