I have one broody hen - Lydia the Partridge Chantecler - that I put a few eggs under; she's been trying to go broody all week, staying in the nesting box most of the day. But, she still laid 5 eggs this week, which are now in the incubator. I have to move to her a dog crate tonight and see if she'll continue setting there.
I have 3 other hens that show signs of wanting to go broody - including Daisy the EE who hatched out two batches last year. I'm doing an experiment to see if I can help them decide it's time to go broody. I set them up in plastic dog crates with sheets over them to make it darker inside, and put the "extra" eggs that it doesn't matter if they hatch or not. We'll see if it works or not. Daisy already settled down on them, but the other two pullets aren't quite sure what to do. (Even though when they're in the nesting box, they growl, hiss & one even pecks me hard.)
Moriah the Dominque wasn't convinced to go broody, as I found her scratching through the litter in the dog crate and had buried a few eggs. I let her go back in with the rest of the flock.
So, I put Alix the Black Sex Link who brooded one clutch last July in that crate, to try her. She hasn't show any broody signs, but it's worth a shot.
I think Daisy the EE is seriously considering setting on those eggs, as she's now clucking, growling and puffing up her feathers. She even went back into the dog crate (wrong one, though) after a potty/food break.
Lydia the Partridge Chantecler doesn't like the dog crate as much as the nesting box, but is sitting on the eggs because there's no other choice.
The Blue Andalusian/Partridge Rock mix pullet isn't quite sure if she wants to go broody or not. She'll growl, fluff up her feathers & peck me in the nesting box. But, she will sit on the eggs part of the time, but not constantly.
Even though I have extra eggs (34) under the possible broddy hens, I don't know if they'll stay broody. Even if all or some of them stay broody, I may not keep all the eggs that are under them now.
They're simply there to try to convince them that it's time to sit on them. They don't have to hatch them out, just become broody by the time for the incubator eggs to hatch. I'd like the incubator chicks to be hatched and raised by the broody hens, but I do have a back-up brooder if my experiment doesn't work.
So, I don't know if those extra eggs should be entered into the hatch-a-long or not.