Our baby flock is now 3 weeks old - and I gotta tell you that brooder box is getting outgrown QUICK with six in there. They're not totally feathered out, though.
So - today we moved them to the run extension, Cera can see them and is fascinated but can't get to them.
(She *has* gotten some supervised time in the run extension with them - she mostly wants to eat their food, I expect it's a dominance thing, and doesn't peck at them unless they try to eat too - then the first peck doesn't seem to hurt, we've only heard a squawk from a chick the one time they stuck around for a second peck. And she's had some time in that extension run without the babies.)
However - we have their brooder box out there, with the lid serving for a ramp into it - they can get out just fine on their own - and an extension cord running to the brooder plate, and a section of moving blanket cut and draped over the brooder box to help keep the heat in better at night.
They really seemed to be having a good time in the run, this is the first time I've seen them explore the whole space.
I hope they're okay in the morning.