Just want to respond to a few inquiries:
Right now the chicks are getting medicated start feed to prevent coccidiosis. Once they start to lay eggs, they'll switch to an organic layer feed. We supplement with organic treats like oats (see video from prior post) and scraps from organic fruits and vegetables. Organic people food can be super expensive, but organic feed (and oats from Whole Foods) isn't so bad.
Although getting fresh eggs is important to us, the hens are, first and foremost, our pets. Egg production begins at about 5 months and continues efficiently for two seasons, when it trails off. Most commercial egg layers are culled (amazing what switching one vowel sound does for a word!) after 2 seasons of laying. However, the natural life span of a chicken is 5-10 years. Our birds will be allowed to live out their full natural lives, although we may add younger layers to our flock every couple of years. Older hens may not lay eggs, but they're still excellent producers of fertilizer!
By the way, you don't need a rooster to get eggs (unless you want fertile eggs).