Well, mine aren't rubbery, they are more like soft bags of skin (eeeuuuw I know). Feel like water balloons. I think they do have yolks. I found two more (TWO!) this morning. This is getting weird.
They are always someplace other than the nest boxes too, which makes me think the pullet responsible knows there is something wrong with them. I'd sure like to know if this is something that's preventable because its happening frequently.
And yes, they get oyster shell and yogurt too.
hmmm.