Just curious to know if any others have experienced this... The egg developed great...only candled 3 times during incubation, but it was growing as expected. The egg was the most active rocker of them all. Since its hatching date had come and gone, I opened the egg to see why it didn't hatch. It never broke the membrane. And, the top half of its beak never developed. Anybody had this happen to them? Is it a genetic or incubating error? Thanks for your thoughts.