You didn't say if you have any roos. Are your eggs fertilized? I don't have a roo and my hens keep going broody. I have one that has been sitting on them and keeping the eggs from freezing every day for almost two weeks now. We remove the eggs and take her off the nest a couple of times each day. Give her a cuddle, some treats and make her get up and eat, drink and move around. I feel bad for her, but we aren't ready to hatch any eggs right now. We did the cold treatment a couple of times earlier in the winter, but it's way tooooo cold for that now. She's just a little banty and she needs to be snuggling in the litter in the coop on these frigid nights.