I spotted the first hole about two hours ago and could hear them cheeping when the broody got off but now she's sat back on them and I haven't heard anything or seen any movement since. They're 21 days old today. Will she just get off when they're ready to come out? Might it be that they don't come out today now? How are they going to come through with her hefty weight sat on them. Sorry but I'm a very inexperienced chicken owner. Thanks for your advice!!!