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Feisty hummingbirds prioritize fencing over feeding


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Hummingbirds are fierce fighters, but also efficient feeders with tongues and bills well adapted to extracting every bit of nectar from a flower. Why, then, do the males of some tropical species have bizarre hooks, serrations and hard tips that defeat efficient nectar extraction? Using high-speed video, researchers have documented how these males use their weaponized bills to fight rivals for food and mates, and the trade-offs in choosing fighting prowess over feeding.mNbVAW69ex0

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