3 a.m. chick died during the night. Mourning period. Did she die from oxygen deprivation? Meaning was there a moment when she struggled too long during the hatch. Was it breed *incompatability*? We keep all of them in a oversized area, all breeds are mingling freely. Bantams, Standards, one big happy flock. Was there not enough humidity in incubator? The water troughs were kept full, however we didn't place sponges or extra water in with them during lockdown. We also don't have a hygrommeter. We had a dozen total, only one more started to hatch, partial hatch, it died as well. The remaining 10 we suspect have expired as well, no peeping, no movement, day 24. They may have been quitters. we candled at intervals as suggested, keeping conditions sanitary. Embryo developements were consistent with growth charts.