They don't get tough.
Some people swap out their old birds at the end of the season and start with all fresh birds in the spring. Other people (like me) keep them until they die naturally, occasionally adding new birds to the mix.
Their fertility does not decrease with age in my experience; at most, the hens will slow down on laying with advanced age. I believe my oldest ones are close to 3 right now
Though I did lose a lot of 2-year-olds last winter from the crazy weather we have here
So I'd say, if you want to process them instead of letting them die naturally, you'd best do it before their 2nd birthdays.
I also do not put lights on mine in the winter, I would probably switch them out yearly if I did. There is nothing wrong with swapping them all out at one time, that's just a matter of preference.
Some people swap out their old birds at the end of the season and start with all fresh birds in the spring. Other people (like me) keep them until they die naturally, occasionally adding new birds to the mix.
Their fertility does not decrease with age in my experience; at most, the hens will slow down on laying with advanced age. I believe my oldest ones are close to 3 right now


I also do not put lights on mine in the winter, I would probably switch them out yearly if I did. There is nothing wrong with swapping them all out at one time, that's just a matter of preference.
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