World Humans were raising the ‘most dangerous bird in the world’ 18,000 years ago, new study shows September 30, 2021October 3, 2021 Jordan Mendoza, USA TODAY Comments Off on Humans were raising the ‘most dangerous bird in the world’ 18,000 years ago, new study shows Turns out chickens weren't the first bird domesticated by humans. It was one with a 4-inch, dagger-like claw on each foot.