So I analyzed some of our "hatch debris" (sadly, we lost about 2/3 of the embryos that were viable at day 17) in hopes of doing better next time around. One definitely pipped from a malposition at the wrong end, and hit a blood vessel, bleeding out. The others are a mystery to me. Of the ones I looked at, there were no internal pips, what appeared to be fully developed chicks, large air cells, but a good bit of fluid under the membranes, and the membranes translucent but a bit leathery, definitely dry on the air cell side. We incubated as recommended from several sources for a dry hatch approach to suppor the ODs, which apparently have a tendency to drown in shell. We kept between 30-40% humidity till lockdown, then 50-55% (reportedly there was one low dip to 45% briefly) during lockdown. Anyone with experience hatching ODs have any thoughts?