Wrinkled Eggs

[twlaughlin]

We have 13 hens and one is laying very wrinkled eggs. She's been laying wrinkled eggs for about 4 weeks now. None of our hens appear to be sick. They are free range hens and we feed them 16% protein layer feed and leave oyster shells in another feeder. Any ideas what's wrong or how to figure out which hen is doing this?

 

[Smileybans]

This is the resource I use when I find a funny egg. https://www.backyardchickens.com/articles/common-egg-quality-problems.65923/

I think there’s a way of dying the chickens vent so the color will come out on the egg. I think just putting food coloring on her vent. I’ve never done it before. Only heard about it. But then you will know who laid the egg. Or you could isolate a suspected hen until she lays. If it isn’t her mark her in some way so you know to look at another hen.