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The “Crazy” Bird With Three Male Types: Scientists Discover Super Enzyme That Breaks Down Testosterone
Male ruffs have the ability to eliminate excess sex hormones from their bloodstream. We often associate high testosterone levels with male dominance and aggression. However, in ruffs—a species of shorebird that breeds across Europe and Asia—some males face a unique challenge: they produce excessive testosterone. Researchers at the Max Planck Institute for Biological Intelligence, in [...]
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