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Small Dinosaurs May Have Flashed Their Feathers to Scare Prey

Why did dinosaurs have feathers? A new study says they may have used their wings to spook their prey into revealing their hiding spots.

ByElizabeth Gamillo
Credit: Matt Martyniuk

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Modern-day birds like the northern mockingbird and the greater roadrunner use their feathers to forage for food. When the birds flash their wings, it scares their prey into revealing their hiding spots, and once they move, the bird snatches up the snack.

A team of researchers suspect that smaller dinosaurs similarly used their feathers to hunt for prey in a new study published in Scientific Reports.

For decades, scientists have speculated what the feathers found on the forearms (proto-wings) of some dinosaurs were used for since they were too small for flight. The wings were likely used to scare prey before they evolved for flight. With a flash of their feathers, small predatory dinosaurs would scare prey enough to flee and swoop in for the kill.

Dinosaur fossils with feather-like structures were first identified in the 1990s. The specimen called Caudipteryx zoui was first described in 1998 and was one ...

  • Elizabeth Gamillo

    Elizabeth Gamillo is a staff writer for Discover and Astronomy. She has written for Science magazine as their 2018 AAAS Diverse Voices in Science Journalism Intern and was a daily contributor for Smithsonian. She is a graduate student in MIT's Graduate Program in Science Writing.

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