I have a broody? But I don't want to open the bator!
Better to than not..to put some hot water bottles in there. Make sure they are able to be closed..like pop bottle tops..water tops. Make the tap water as hot as you can, put them in. Put warm water in to keep the humidity up, remember, no condensation on the windows. Can happen with warm water, just make it a little warm into the tunnels for water.
It's nice to have a couple of good silkie hatches in a row. I had 10 go into lock down, 8 made it!
