This is my setup for separating a broody. Definitely do it at night. This picture is from last spring, but I currently have the exact same broody in the exact same place right now sitting on 10 eggs. I also have another dog cage just on the other side of this one with another broody. That one was actually hatched by this mama last spring so the other one is a first timer. We'll see how she does.Here are some pictures (taken just now) that show my setup explained previously for separating a broody. This girl has been sitting faithfully for just under two weeks on these eggs. Just about a week more to go.I have had really good success separating them like this.
Excuse the broody poop. I need to get that cleaned out, but it shows she isn't doing it on the eggs!