Well I guess it depends on her size. My blue slate hen easily covered 9 turkey eggs AND 9 chicken eggs at once. My royal palm hen is 11 months old and much smaller. She is setting on 4 turkey eggs and 6 chicken eggs, but could cover more I'd say, just all I wanted to give her.
They would be fine with her with a heat lamp, but he would need to watch really close to be sure she accepted them and didn't hurt them. 18 poults sounds like a lot, but most likely all 18 will not hatch anyway.
Worst thing is, the last 6 will be like a week later than the 1st 12, so the 1st 12 would already have learned to know what she's saying and stuff, and would likely run over the newbies. Maybe by then, one of ur other hens will be setting better??
She is a cuckoo maran! I was hoping to set them all at once.
