I ordered chicks back in early June for the fall. I have 8 arriving in just over a week. I will save you from the series of ridiculous events that have preceded the need for my post, but the result is 2 black copper marans and 3 blue orpington chicks that hatched under my broody-butt Australorp last Thursday. I've heard of people tucking a few extra chicks under a broody mama at night. I'm wondering two things: 1.) Is 2 weeks is too great a difference in age to attempt it? The chicks arriving will be partridge plymouth rocks, light brahmas, partridge cochins, a dominique and a speckled sussex. 2.) Is potentially 13 chicks too many for her to take care of? This is assuming all 8 survive the shipping. I was thinking I might give the newbies a day to start eating, and rehydrate, and then starting the following night, tuck a couple of them under her each night, after dark. I can put a heat lamp in the brooder area with her if needed. Thoughts?