https://www.statista.com/statistics/263962/number-of-chickens-worldwide-since-1990/
ref - https://www.reddit.com/r/todayilearned/comments/f0vp50/til_that_chickens_outnumber_humans_by_a_ratio_of/
origin - https://www.pipiscrew.com/?p=16918 chickens-outnumber-humans-by-a-ratio-of-31-there-are-approximately-24-billion-chickens-on-planet-earth