I have a broody sitting on four eggs in the main coop. She rarely leaves the nest, so I've been taking her off the nest once a day. I'm wondering at what point I should stop taking her off the nest as hatch day approaches. Also, I set the eggs under her on Sunday night, June 10. Does that mean that hatch will be on or around Sunday night 21 days later? At what point should I start checking for hatching? I'm going to have to move her when they hatch because she's up on a shelf that would be dangerous for chicks. Thanks!