I don't own an electric incubator, but I have several mixed-breed bantams who will brood. Recently I set 3 hens with eggs from the standard size flock. The first two hens left unhatched eggs behind. About 24 hours after the other chicks hatch the hens leave the nest to take their kids out to eat & drink & scratch. I usually take the unhatched eggs out of the nest at that time. The unhatched eggs were ones from which I really wanted chicks. They were big brown eggs from my Red Sex-Link. I had chicks hatch from her eggs before in an electric incubator, and really liked the chicks. There was a huge genial red & white rooster and a big red & white hen. I was hoping to get more birds like them. When I cracked these unhatched eggs I found them to be full of chick! Why do you think the chicks didn't come out? Do you think they could have hatched artificially? What would be the best way to make that happen? Would I need an actual incubator or could I keep them warm with a heat lamp? Would I need to provide moisture/humidity? The last hen has 1 chick that hatched out and is still setting on 2 more eggs, one of which is a big brown one. I know she did get up at least once today to take her chick out, but she is still hugging those unhatched eggs closely when she is on the nest. I'm waiting to see if she can persuade them to finally hatch. I appreciate any & all ideas, theories, & imput. Thank you!