The big horns that male elk and rhinoceros beetles use to attract females really are signs of superior health, according to a study of the bugs’ insulin levels.
Scientists once thought showy males were ‘handicapped’ by their unwieldy adornments, but the new study says otherwise. “It’s a sign that these males are thriving, made of some pretty sturdy stuff and certainly mate-worthy,” says Ian Dworkin, zoologist at Michigan State University.
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Photo credit: Michigan State University