Mention foraging bees, and most people will picture insects flitting from flower to flower in search of nectar. But in the jungles of Central and South America, so-called vulture bees have developed a taste for flesh. Scientists have puzzled over why the stingless buzzers seem to prefer rotting carcasses to nectar. Now one group of researchers thinks it has cracked the riddle. The key came from looking into the bees’ guts.
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