We have old young and everything in between. Just curious to the ways of "culling" out the flock.
Im having the same problem except on a much smaller scale- 20 chickens as most 12 eggs a day, now i know 1 is a frizzle 18 weeks and isn't going to lay that well, but how can you find out whose laying.
Chickens are not very resilient creatures and everything from there health, environment, breed and age can cause low production. Molting and stress can be huge contributors to low production. If your hens aren't producing to a level of your satisfaction then maybe it's out with the old and in with the new....