Picture in the following article shows the difference in size of chickens since the 1950s. see https://www.zmescience.com/feature-post/how-chickens-tripled-in-

Picture in the following article shows the difference in size of chickens since the 1950s. see https://www.zmescience.com/feature-post/how-chickens-tripled-in-size/ https://www.zmescience.com/feature-post/how-chickens-tripled...