Thanks, I am familiar with the charge as chickens age, but this wasn't over time. It was was sudden. I found a slightly poopy eggs and decided to treat all the girls for worms.
I noticed that my Maran and Buff Orpington both suddenly started laying lighter eggs at the same time. It's been over a week and their eggs are consistently lighter than they were before that. I've been trying to think of what major changes occurred. I did add a couple new hens to the flock. All...