Update. Three hatched on the 19th, none hatched on the 20th, six hatched on the 21st, three hatched on the 22nd, one on the 23rd, and two hatched today. Only one egg left. I currently have 15 neonates some of which I've seen eating. Of the species I've kept, I don't think I've ever had eggs hatching spread out this far apart, but I know others have with other species.
Now the bad news. Yesterday, I had another egg shrink. It only had a single slit in it, although it was larger than the slit in the one eggs that shrunk on the 19th (that baby never made it out). This morning, there was absolutely no progress in the egg that shrunk yesterday. I cut it partially open and right away I saw the baby's mouth open with its tongue slightly protruding. I left him in the egg with his head sticking out, but I'm 99.9% sure it's dead.
The following may belong in a separate thread (off topic a little), but when babies don't hatch, we often say "it was simply too weak to cut its way out." I wonder how often that really is the case. Sometimes it seems to me that it could be simple a timing thing. I've noticed that with these guys anyway, the slitting occurred pretty much simultaneously with the shrinking, or close to it. In the cases where the cutting didn't occur early, it seems those individuals took longer overall to hatch (from the first sign of sweating to actual emergence), and that the total amount of time that the neonate took to slit the egg was longer. Maybe an egg is easier to slit internally when there is more internal pressure from the fluids. I also find it interesting that some individuals bolt out, almost flying out

, whereas others take a really long time to emerge. I can't say for sure, but it seems that the ones who cut early where the ones that bolted out (maybe they weren't as exhausted as the ones that waited longer before making significant cuts??). Keep in mind this is very speculative and is simply a casual observation. I can't make any definitive conclusions, but I am curious as to why the two died. Were they too weak or was it something else? I would love to hear from any of you who have observed dozens of panther or veiled clutches hatch. Maybe you have something more concrete rather than just mere speculation.
I'm assuming that often, lack of overall vigor is a reason for them not getting out of the egg, especially in cases, like I've seen before, where a baby dies with it's head sticking out. Other times, oxygen deprivation might be a reason. I'm sure many of you have seen a head poke out only to go back it. I wonder if in these instances, they are taking their first breath. With all of the squirming around they do inside the egg, I'm wondering whether their oxygen demands are higher thereby creating a need for them to cut adequate slits and poke their nose out as soon as possible. I just want to know physiologically what exactly happens during the hatching process in terms of the babies receiving enough oxygen. Full of questions and a "need" to know.
Perry