Some breeds are more likely to go broody than others, but you never get any guarantees. RIR are usually considered to not go broody very often if at all. Some do. Dominique are generally known to go broody but you have to have enough for the averages to mean anything. One individual is not enough for averages to mean much. Any of those hens could go broody but you don’t get guarantees.
I bred my flock to go broody a lot so I can be sure of getting some broody hens this summer. Mine are from breeds that don’t go broody that much but by selectively breeding I’ve overcome that. Before I did have a broody flock, I had to use an incubator to hatch eggs. I cannot control when a hen goes broody so I still use an incubator for an early spring hatch. That’s the only way you can control when eggs will hatch and with a flock like yours, even if you get any eggs to hatch, use an incubator. But that means you need to brood the chicks yourself. If you ever do get a broody hen, hatch her eggs and save the chicks to you flock. It may take a couple of generations but it works.
Even if you got a few hens from breeds that go broody a lot, like Silkies or Cochin, you won’t have a guarantee that any will really go broody though your odds are pretty good if you have a few. You still will not be able to control when they go broody.
