I have a broody hen sitting on eggs since the 26th. I had a very bad first experence a few months ago w/ a broody hen who kept sitting and killed two chicks in the process. After that I swore I wouldn't let another one sit, but I guess I am a sucker. What can I do to ensure the best hatch (everyone hatches near the same time)? When do I start counting days. I was told a long time ago that after all the eggs are layed is when the 21 days starts but is that true? I do need to move her, as my guniea likes to snuggle when laying and I am afraid she may keep adding eggs to the nest. Any other pointers?