I'm far from an expert since we have only hatched once with a broody...but ours took over 21 days. It was her first hatch and I think she sometimes left the nest a little longer than most. I think just like an incubator can take longer if there is a temp dip, same goes for if the eggs cool under the hen. Like I said, not an expert but I THINK that's accurate.It's day 23 with the broody and none have hatched.... Is this normal?