What made us settle on cow’s milk and chicken eggs as our standard milk/egg?

Question

I understand that people also eat quail eggs, goat milk or etc etc due to geography (?) – but at what point and why did many settle on chicken eggs and cow milk?

Thank you

ETA: WOOAAAAAAH a great deal of responses here. thank you!!!!

In: 16218

Answer 1

I haven’t seen anyone say yet: chickens are flock animals with strict pecking orders. They self regulate their heirarchy, which allows them to be kept in large flocks without too much conflict.