Chicken Planet (2016)

Plot

For over five millennia, chickens and people have shared an extraordinary bond. Now numbering some 19 billion, they outnumber us three to one and surpass every other bird on the planet. How did this modest forest dweller spread across every continent, evolving into Earth's most plentiful and varied avian? Discover the story of one of nature's most understated yet breathtaking marvels.