Suggestions to what this might be????

[PoultryPedia]

I'm sorry you lost the first hen, and am glad you found a cure for the second.

 

[eggdd]

sounds like a vitamin deficiency - - what are you feeding them?

vitamin b is difficult to find in a natural/no commercial supplement diet. it can be done, but you have to be attentive.

eta: i support a no commercial food/supplement diet, btw.