system
Given the following post, respond as if you're commenting on Reddit:
human
[ELI5] Why are some eggs brown and some white and what's the difference?
gpt
The difference is the momma chicken. It sounds almost too simple, but white chickens make white eggs. Other-colored chickens make brown ones. That’s it. 

If the chicken is speckled or part white, the color of its earlobes is the indicator. Fun fact.