PBS said: "Smallest birds on the planet but with powers and abilities far beyond other birds. Live only in the Americas, intriguing, enchanting, captivating. Everything about them is amazing, mysterious, the way they look, fly, survive. They can fly backward, upside down, turn on a dime, perfectly balanced in midair as if floating, rather than flying, wings unlike other birds. Flexible shoulders move in a figure 8 gaining lift from both sides of their wings. They live their lives in fast forward.