Domestic hens were still bred into significantly higher egg output capacities.
If you want to tangent off specifically into niche birds, sure a guinea hen has a high natural egg laying capacity, as you stated, if you manipulate it’s environment. Typically in the wild, however, it would lay ~10-20 per year. Your more typical bred domestic chicken that this conversation is actually about has more than twice the capacity of the guinea hen’s natural limit. Let’s keep on topic here though, yeah?
Domestic hens were still bred into significantly higher egg output capacities.
If you want to tangent off specifically into niche birds, sure a guinea hen has a high natural egg laying capacity, as you stated, if you manipulate it’s environment. Typically in the wild, however, it would lay ~10-20 per year. Your more typical bred domestic chicken that this conversation is actually about has more than twice the capacity of the guinea hen’s natural limit. Let’s keep on topic here though, yeah?