Ruby-throated hummingbirds move exceptionally quickly, they are capable of rapidly beating their wings more than 50 times a second. It's possible to hear the beat of the wings, which make a humming sound, hence the bird's name. These hummingbirds are very small, growing only 3.5 inches (nine centimeters) tall and weighing less than a quarter of an ounce (seven grams). However, they eat approximately every 15 minutes to maintain their energy. They must enter deep torpor every night and greatly re