I would look at the kennel set up and see what might be so "different" that the hens don't like it. It really helps to have a broody spot that is nest boxes rather than dog kennel if that is what you are trying to use. They will need the feel of a proper box.
Assuming that it is a perfectly decent place to brood, and they being chickens are just fickle, I got around the "I don't like to move" glitch by having a broody hutch/grow out that I put them in either at the first hint of a brood or my bantams simply live there so that is where they will brood.
If a hen is reluctant in a new broody nest, I can place screens and boards in my hutch system so that I can block a hen in so she can't get out. Some become very upset and won't settle, so you have to let them out. Some squawk a bit, pace a bit, then settle. After they have been quiet and look to be in a good brood again for at least several days, I open it up more and test the waters.
LofMc
My kennel set-up is pretty ideal (I think; not so much the hens). It's quiet. I cover it with a sheet so it is secluded and very dark. I also tried giving her a box for the eggs with a partially covered top. They are just VERY attached to the nest boxes.
Last year I remember I did have one hen move successfully, actually. However, it took her several days to adjust and the hatch itself was not successful. I had moved her in the middle of incubation out of necessity as I had an egg-eater attacking the developing eggs when broody was on break.
The broody quarters is a great idea! I've thought of doing that myself if I had more room. Thanks!
I should be more persistent and wait longer, but I don't like to see them pacing and knocking over the water that I thought I securely wired to the side or stepping in the feed and tracking mess around from agitation. I caved after 2 days this time.
I peeked under the sheet into the darkness and Dusty was just...standing there doing nothing. The golf balls were spread all over the kennel, scratched out of the box--it needs a lip on the side. When I tried with the other hen, she had conflicting feelings: she got on the nest, got off the nest, got on, got off, and then decided it wasn't for her and spent the rest of her time trying to get out.
The simplest option is to let her go broody in one of the main nest boxes... ie wait until she is committed to brooding and has been setting day and night for a couple of days, then remove the eggs she has and replace with the eggs you want to hatch. Place a removable board across the front of that nest box, so that other hens cannot get in to disturb her (it doesn't have to be the full size of the opening but cover most of it) and remove it once a day for her to come out to eat and poop etc. Then you can supervise her broody breaks and ensure she goes back to the right nest by removing all eggs from the other nest boxes so that she choses the box which has eggs in... hers. It really is very simple. She gets to brood where she wants, doesn't get disturbed by the other birds climbing on top of her to lay which risks the eggs getting broken and you have peace of mind that she is not wandering off to another nest and abandoning her eggs whilst you are not there. I have 2 broodies and this works absolutely fine. They know when I remove the board that it is time to get off and do what is necessary and even if I can't make it the same time every day, they hold until I remove the board and the increased light stimulates them to get off and go.
I keep posting this method as so many people seem to have the same problem, but no one seems to comprehend just how easy it is and how well it works. If you have a freestanding nest box, just put a cardboard box over it with a few holes punched in it. Broody hens like to be in the dark and undisturbed, so it is much kinder to do this than to allow other hens to climb all over her nest or move her to somewhere that she doesn't feel safe.
If you must move them, make the new nest really dark and she will most likely settle very quickly. Once she settles and feels the eggs under her, she will stop panicking and click back into broody mode.
Mine are committed to brooding. There are always fresh eggs in my boxes and they are always sitting on them. I collect once or twice a day, but they are typically never devoid of eggs.
Blocking a nest is a great idea. My bantams are so small, though, I worry I might not be able to keep them from wriggling out. I wondered about that earlier...so I tried folding up the perches on the upper boxes. She came out immediately, so I'd have to somehow attach mesh across the whole front...and make it easy to remove. I think that is the method I'll have to go with. Thanks for sharing your successful experience with it!