I have just begun hatching chicks using an incubator. The first batch had a chick that required assistance out of the shell, it had shrink-wrapped and was going nowhere without help. This chick was at 9 days old the size of a day old chick. So when our broody hatched her little clutch, I slipped Squeaky (he was non-stop noise) under her at night. Mama accepted the chick, and the chick has continued to grow slowly, it is still now the same size as the 9-days-younger clutch he was adopted into. But he's doing well, it seems. Meanwhile, another incubator batch also produced another 2 eggs needing help. One required HEAPS of help, and this one is also an extremely noisy runt. The 2nd egg required a little help, and I noted it was smaller than the unassisted chicks, but bigger and stronger than the runt and not noisy. So I am figuring the less assistance given, the stronger and bigger and happier the chick? And yes, both runts had "stoner eyes". My first batch are a month old so it's too early to say how things turned out. The first runt under the hen seems to be doing much better than when in the brooder.