00:00Number nine on our list takes us to the South American rainforest, where high-speed
00:08acrobatics are a daily activity for this tiny little bird. That's about as acrobatic as it gets.
00:21Hummingbirds rely on nectar to survive. Some species guzzle down twice their body weight
00:28of the sugary water each day, meaning they must visit as many as 2,000 flowers before sunset just
00:36to stay in the game. Flapping their wings at an astonishing 80 beats per second,
00:46hummingbirds hold the title of the fastest flappers on the planet. While most other species stick to
00:54the usual up and down wing strokes, hummingbirds have perfected a unique backwards and forwards
01:00motion. Altering the angle of their wings allows them to fly forward, sideways, backwards and even
01:09upside down. Vital maneuvers to dodge mid-air collisions with pesky rivals.
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