So I have a broody setting on 6 eggs, due 8/1 or 8/2. I was thinking of giving her some chicks that a friend I met on BYC is hatching out of an incubator on 7/29 and 7/30. I want to keep any chicks that hatch under the broody, just add a few more. Do ya'll think it would be a problem to slip in some chicks at night once my broody's other chicks hatch out? Would the couple days difference in age matter?