See... I don't get this... a hen can walk in poop, actually poop ON the eggs, turn them, kick them, leave them to get cold for a half hour at a time, and the eggs still hatch. Heck, I watched a seagull chick hatch on an exposed rocky ledge, no nest, just rocks and lichen, while being bathed in a brisk breeze from a waterfall coming off of a glacier 100 feet away... why the **bleep** can't we hatch them in controlled conditions?