Is your hen eating her eggs while she is broody? I just ask a this as you have posted in the incubating and hatching section. Egg eating is a habit you really need to try and break her out of. There could be many reasons for her eating eggs. Often an egg gets broken and the hen/s investigate it and find the yolk is very tasty and in turn go searching for more of the yolk once another egg is laid. Other hens then often follow suit once one has started.