Brown Shavers and Hyline Brown hens are used in the commercial egg laying industry. Specifically bred for their ability to lay prolifically and mature quickly they can begin to lay at 18 weeks of age, compared to heritage breeds that only begin laying from around 24 weeks. Due to them growing and maturing so fast, it is only commercially viable to keep them to 18 months old when they become 'surplus to requirements' and are usually culled.
All of our chickens have been adopted, and our large brown hens are ex-battery hens that have come to us from an organisation called Free as a Bird Rescue. They have saved and rehabilitated thousands of hens at kill time. Get in contact with them if you can provide a home for some of these girls in need of a proper chance at life, or just to find out what kind of life battery hens live in hopes of putting you off cage eggs.