I have a chick that hatched on day 16! Very curious how this could have happened. All 12 were put under her at same time. Got them from a guy who said all were laid within a week. ANYWAY! On day 18 currently. This happened when I was out of town. Mom said every time she came by she was mothering the chick and not on the eggs. Just candled and some (maybe all) are alive. Should I just leave them out there and hope she’s sitting on them enough? It’s very humid and been at a heat index of 100+ this week. OR should I try to put them under a heat lamp with a wet towel over them? I don’t have an incubator.