Sorry to hear that. I had two broodies last Fall that started fighting when the chicks hatched. One of them suddenly started attacking the other hen and it got pretty bloody. But I have had other broodies that got along fine together. You never know I guess. Hope the rest of your hatch goes better.
Thanks!
Before I left the house, I checked them again, and one had broken through my temporary barrier. I'm pretty sure the one that broke through is the killer, so I just took her out and put her back in her regular pen. I think the other hen was the more serious one. Hope I made the right call, but I guess we'll see.
Last year, I had a pair of co-broodies. They mothered together fine for about a week, then one kinda took over, and the other went on about her business. Didn't bother or hurt the chicks, and was good to them, but was more like a good aunt instead of a co-momma.