How These Hummingbirds Turned Their Beaks Into Swords ScienceTake
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In the South American tropics, where hummingbirds must compete for food, evolution has drastically reshaped their bills. They are thicker and more rigid, often with a hook on the end. In some cases, they have jagged points, like rows of teeth all the better for fighting off rivals!
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Every week, ScienceTake answers questions like how monkeys teach manners, elephants show empathy and ants imitate water. Tune in Tuesdays at 4 p. m. Date: 2020-08-15
