Hi, i am new to this. I have a hen sitting on a dozen eggs or so about 2.5 feet off the coop floor. When the chicks hatch could they fall out of the nest box? Should I move all of the hatched chicks and mom to the floor and build a temporary safe area around her or put her in a cage in the coop? . Is there usually a long time between eggs hatching that while waiting for the last ones to hatch the first ones fall? My coop is 6 x 6 x 8' at center with 15 chickens total. Thank you.