Unless the individual in question actually rescues their chickens from exploitative situations, the vast majority of backyard chickens originate from the same breeding industry that provides chicks to large-scale farming operations. As a result, virtually all backyard chickens come from industrial hatcheries that employ the same brutal measures that are standard among factory farms (including debeaking) even though the prospective buyer is encouraged to believe otherwise through careful packaging of the “product.”
Like commercial and industrial egg producers, the backyard farm has considerably less use for roosters than for egg-laying hens. In fact, roosters are frequently illegal in the same municipal areas where hens are permissible. Hence, male chicks, which (as one would expect) make up 50% of all chicks hatched, are considered expendable and are treated as such, including being killed using the most “cost-effective” means (which often involves being ground up alive, suffocation, or simply dying from starvation or exposure in dumpsters).
The sexing of chicks is not an easy business, so even with the employment of such callous measures, there are many male chicks who make it through the sexing process, and end up being sold as females, only to later be rejected by the very households who purchased them. These unwanted and frequently illegal roosters end up, at best, in farm animal sanctuaries, or local animal shelters with cats and dogs where they will ultimately be “euthanized”. Hens, too, when their egg productivity wanes later in life and they are no longer wanted, are frequently placed in similar circumstances, unless their owners simply slaughter or sell them for their flesh.
Even if hens are kept by their owners for the rest of their natural lives instead of being slaughtered when egg production wanes, modern domesticated hens are genetically bred to produce an egg a day, which is a far greater rate than is natural or healthy for them. In other words, domesticated hens are severely malnourished by providing an egg every day, unless they are allowed to eat the vast majority of their own eggs (also mostly unnatural, but due to unnaturally high egg production, necessary for nutrition). So, taking eggs away from hens at such a high rate of production severely harms hens regardless of how well the hens are otherwise treated.