Just read this thread and I'm astounded. I had a dozen farmer's market eggs in the fridge and I checked -- one was definitely fertile and one was a maybe. Since I just got my 'bator today, and I'm therefore (obviously) excitedly chomping at the bit for chicks, I was sooooooo tempted to toss them in and see how they would do. But hubby wants "identifiable" chickens, not just mutts, so he wants me to purchase eggs instead. Plus the kids really want to see them hatch and I don't want to disappoint them with low-probability eggs. <sigh>...waiting again!