Hi all! My hens are 3 years old and for the past two days I’ve noticed blood on my eggs and in the nesting box. I know this happens when hens first start laying but mine have been laying for years. I’ve read in that case it will sort itself out. How long does that typically take? I’ve checked my hens and I can’t physically see anything wrong with them. What’s steps, if any, should I be taking? Thanks!