Asils. Have had asils go broody at six months of age. Usually raise multiple broods a year. Have had them do five. Had one hatch eggs in -12 weather with snow blowing through the cracks of the barn. Had one hatch out chicks that I took and put in a brooder, because I had eggs shipped in. Shipped eggs no good, so I gave her some more and she hatched them, and then hatched another batch in the fall. Must not have hurt her, she is five now and setting on her second batch this year. They live a long time, know of an asil hen that hacthed her own chicks at the age of fourteen. Twenty years old is not unheard of. One of mine beat a skunk into the fetal position for messing with her babies. Her dad killed a 'possum. Have seen video and heard of more than one instance of them driving away or killing hawks. Stories of them killing cobras in their homeland. While they don't like other chickens, they are the calmest and gentlest chicken you can find toward their people. The males are especially laid back. I let one ride in the truck with me every now and then. Even the males are broody at times.