My neighbor's buff Orpington has gone broody two times. Both times were when my neighbor was out of town for an extended period of time. The comb on her broody hen went ale and sickly too. So I went to the local feed store and bought a container of mealy worms. I took her off the nest and outside of the pen, I gave her some worms. This helped her immensely!! She LOVES the worms. A few days later her comb was perked up and she stopped brooding.
That is very interesting. I will have to try that with my broody Aussie.