Is there anything I can or should do? I have 30 hens so I am not sure I will be able to identify which one has the issue if they aren't showing signs. I do know it's one of my oliver eggers because of the color of shell it came from.
This is my first time posting, but I am a long time reader - so thank you all, you've helped me already.
But now I have a specific Q I need help with. I had 21 chickens when there was a dog attack that took 18. I realized then that my double fenced run, and sturdy coop, may not be enough to...