Hummingbirds, birch trees, queen bees, northern quolls and more...
Birch trees borrow bug repellent. Rhododendrons emit airborne compounds that keep away weevils, moths and aphids. Scientists in Finland found that nearby silver birches absorbed repellent in their leaves, later released it—and suffered less pest damage than other birches. It’s the first time such interactions have been seen in a forest.
Learn more about rhododendrons at the Encyclopedia of Life.
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