Linked from
The 8 pages that link to Egg production, each with the reason it gives.
PoultryRelated: Laying flocks are managed for sustained egg output rather than meat yield.
Chicken breedsRelated: Layer breeds and strains are selected for sustained egg yield.
Rhode Island RedRelated: Rhode Island Reds are valued for laying a substantial supply of brown eggs.
Plymouth Rock chickenRelated: Plymouth Rocks are kept for a useful supply of brown eggs.
AustralorpRelated: Australorps were selected for high laying performance.
Leghorn chickenRelated: Leghorns are widely valued for their high rate of egg laying.
Domesticated quailRelated: Quail are valued for laying eggs despite their small body size.