As climate change has warmed the heights of the Rocky Mountains, the anatomy of some specialized bees has changed too, weakening their ancient partnerships with certain alpine flowers.
Two species of long-tongued bumblebees now have tongues that are 24 percent shorter on average than those in specimens from the 1960s and 1970s, says ecologist Nicole Miller-Struttmann of State University of New York College of Old Westbury. These bees do much of the pollinating in high fields of flowers, especially for unusually deep-throated flower species.
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