The Lesser of Two Weevils: Size Differences in Some Insects Lead to Tradeoffs in the Competition for Mates

July 5, 2024 • by Esther Robards-Forbes

The largest males have bigger weapons, but smaller males have other advantages.

Three jousting weevils on a wooden log

Photo by Ummat Somjee


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Three birds are shown. On the left is a blue jay, which is primarily blue with some patches of white on wing tips, around the face and on the chest. On the right is a green jay, which is primarily green with a lighter colored chest and a mix of blue and black patches on the face. In the center is a hybrid bird, which is primarily blue and resembles a blue jay, but with a larger area of black on the face, more akin to a green jay.

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