I dont know, but cochins are too, no? We've raised chickens for 5 years, had orpingtons, wyandottes, cochins, only ONCE has a hen gone broody and it was a wyandotte. And many people have hens who are supposedly a nonbroody breed, but they have them go broody tons.
Depends on the chicken, if you have a bunch others going, then ya, it will want to try it out, but if not, then who knows