What causes soft yolks?

[laul28]

I only have one chicken (Molly) who is on her second fall, not freezing here yet. But her yolks break very easily and the whites are more runny. I have noticed this the last month or so. She has at least 3-4 hours of free range and I offer free choice oyster shell. She is my only green egg layer, so I know that it is her. Her sister is fine. and my new layers are fine. Could she have something wrong with her? Does she need something?

 

[Xanadu]

Have gotten an egg for two days in a row now that the yolk busted upon cracking into the frying pan, which has not happened before. I collect the eggs and we use them up almost daily so they are not old. But one of my hens is about four-five years old. So I suspect it is her eggs.