I was watching the eggs last night (it was the middle of the 19th day) and I saw at least half of them moving over the course of an hour. Once I heard a tapping and I thought maybe one was pipping but it didn't. The egg moved more after that but this morning I didn't see it moving but I didn't spend a whole lot of time watching this morning--I saw maybe only 2 move this morning in the short time I watched. Do the eggs do that? Move a whole bunch for a while and then be still for a while? (Before pipping?) I'm just a little paranoid that they weren't able to peck out of the shell.