Thank you! How long should I let them sit on the current eggs before I know if they are viable? I do know for sure I took a picture on April 4th of her sitting on a few.Ok, just saw your question on the other thread. Sounds like a difficult situation. In the first place, you don’t want to let other hens add to a broody’s eggs. Next time, mark the eggs when she starts sitting so you can remove any eggs that get added. Maybe you should do that now so you can remove any eggs added at this point. The hen will abandon any unhatched eggs after a few days to care for the chicks, but if you have an incubator you can throw the newer eggs in there and maybe hatch them yourself.
Second, you can run into problems if you have two hens at different stages of broodiness. I had a hen go broody once after another hen had already been sitting for 2 weeks. When the eggs started to hatch, the new broody got upset, thinking that it was too soon for babies to be hatching, and killed them. So my advice would be to separate the broodies & give them their own nests. Good luck!