". . . resulting in a feed cost of $7.52 in feed per year per hen, an egg
production of $13.20 per year, and a net profit of $5.68 per hen-year."
Fertilizer value discussed but not used in this calculation, hm.
I would raise a flock whether it were economical or not. If most American
families raised enough hens to produce all their own eggs and used the
"waste" to fertilize a veggie garden, we would have better values and
healthier citizens.