True enuf that one cannot force a hen into a broody mode. However one can encourage it by using fake eggs in the nest/s. I use golf balls (will kill snakes that eat them), works the same as plastic eggs. I take out an egg and replace it with a golf ball. It may not be the hen I want that takes the nest, but most often one of them will by the time there is about a dozen eggs,, balls in the nest. Then after dark remove the balls and put back the eggs I want her to set on. I also put her and the nest full of eggs in a breading pen so no other hens can continue to use the nest.
bully girls!). I'm more than happy to keep them alone and can do some sort of extension to the little coop they are in to have more space for them if chicks are on the cards. Even long term I think I may never be able to integrate them - I'm not sure I can cope with the violence to get to that point!

) but other breeds I think I'd be OK - I may need help with the killing part but have various neighbours / friends who dispatch their birds a couple of times a year.