I’ve noticed from my experience hens that go broody tend to live longer. I’m assuming because the hens body gets a break from the egg cycle for over a month, hence why they live longer.
She always use to make broody noises like excessively clicking nonestop how a broody hen would. and would look kinda weak but she never sat in any eggs and didn’t even try to hatch eggs she was acting like this for 3 months. But I didn’t think much of it.
I’ve found one hen top of the order with blood on her feathers no wound. I’m quit suspicious about her. But I’m not quite sure or have enough evidence.