I have 19 eggs in the incubator. They were placed in on different days, but I marked each egg with their date. The first set was due to hatch 2 days ago, the next set yesterday and so on. The problem is none have hatched. We have seen one or two moving around in the last couple of days, but no chickies yet! Could there be a problem with the shell being too hard? I got the eggs from my mom who feeds her chickens lots of bread and food with lots of vitamins. She went to crack an egg recently and found that it was REALLY hard to get open. Any chance this could be happening with my overdue chicks? Having a hard time getting through the shell. I am brand new at this so pretty anxious to see if everything will turn out. 
