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pollen balls

Overhead view of a white square bowl containing a few dozen small pollen balls, varying in color from dark yellowish brown to sandy brown to medium gray and dark gray.

>A study of managed bumble bees and honey bees on a blueberry farm finds that most of the pollen they collect comes from other plants, suggesting that supplementing crops with a diversity of nearby plant types makes for healthier bees. A sample of pollen loads collected from bees, shown here, illustrates the diversity of pollen types the bees sought out. (Photo by Kelsey Graham, Ph.D.)

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