How These Hummingbirds Turned Their Beaks Into Swords | ScienceTake

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by Aadhiv, 4 weeks ago.
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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!

Read the story here: https://www.nytimes.com/2019/02/05/science/hummingbirds-science-take.html

Every week, ScienceTake answers questions like how monkeys teach manners, elephants show empathy and ants imitate water. Tune in Tuesdays at 4 p.m.

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