Really not sure what happened. In a 24hr period all eggs are gone and hens back up on roost tonight. We have a rooster that is very protective and the two hens that went broody were top hens. None of the others messed with them. Especially during the past couple weeks. They were sitting in eggs for 16 days. Now tonight are all gone. Hens stayed on eggs all day and night. Broody hens were broody previously and hatched several times. We have Great Pyrenees that don't allow anything around and all the hens have to do is call out in trouble and rooster comes running and so do dogs. No large predator could be reason hens are in a 10x10 coop and were in their boxes. Boxes are off ground a couple feet but do have ramps up to them. Only a rat or snake I could think of a predator but doubt in a 24 he period. 30-40 eggs would be gone. No cracked shells. No left over liquid from eggs in boxes. No eggs around where looks like they pushed out. Eggs are just gone. Any ideas would be helpful. Again this was day 16 of them sitting.