Dueling Sparrows: High-Speed Flight Videos Show Hidden Aerial World

Sparrows seem pleasant, but fluttering feathers can hide vicious claw-to-claw combat at feeders.

One judge, science philosopher Bas Haring of Leiden University, said in a press release that the “harsh reality unveils the ongoing struggle between these so-called sweet birds.”

Video: Liset Karman and Cees Keyer/Flight Artists

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