The chicken we eat has increased 364% in size over the last 50 years.
Due to selective breeding, chickens nowadays are a lot bigger than the ones from the 1950s or 1970s. Over the years, they have gone from weighing 34 grams (1.2 oz) as chicks to weighing 44 grams (1.5 oz). As adults, they have gone from 905 grams (2 lb) to 4,202 grams (9.2 lb).
