Bizarro! I've had eggs with tails before, but that one takes the cake. Crazy, crazy. If your bunch had IB, that might account for some egg issues. Molting will stress their bodies to the max, too, and cause egg problems. Skye has laid three eggs lately, all contents, no membrane or shell. The first one was before Velvet died. I thought it was Velvet, but I've had two since we lost Vel. She's got me worried right now, too, so I can imagine what you must be feeling. I did get a shell-less egg from one of my new layers, but a single one.