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Sharper, straighter, stiffer, stronger: Male green hermit hummingbirds have bills evolved for fighting
November 21, 2025
SEATTLE, Washington, Nov. 21 -- The University of Washington posted the following news release:

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Sharper, straighter, stiffer, stronger: Male green hermit hummingbirds have bills evolved for fighting

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A female green hermit hummingbird hovers before a flower. Credit: Jan Lenaert.

Let's get one thing out of the way: All hummingbirds fight. Most species fight for food, using their tiny bodies and sharp bills to force compe . . .

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