Aren't all of your eggs hatched in an incubator? Over here I use broody chickens, and this year I let a peahen incubate her own eggs. The thing that made me think that the color mutations are weaker and take longer is that when my peachicks from my more common colors were hatching, they externally pipped on day 27 and were dry and out by day 28. With the bronze peachicks, they internally pipped on day 28 and they could not externally pip for a whole day. It was on day 29 that holes had to be made in the egg for the chicks to just have to push out of the shell. When holes had to be made, it seemed like the shell was really hard since the hen cannot really increase the humidity...They were out and dry by day 30. In two days, I have 6 (i think) peachicks supposed to hatch. One bronze egg was moved to a little giant incubator that will be imprinted. I am wondering that if with increased humidity it will hatch timely. Four of the eggs are from my peafowl. One bronze egg is still under a broody hen, so I will have to see how that one does compared to the one in the incubator.