Trees with “Crown Shyness” Mysteriously Avoid Touching Each Other
If you look up toward certain types of towering trees—including eucalyptus, Sitka spruce, and Japanese larch—you may notice a unique phenomenon: the uppermost branches don't touch. Known as “crown shyness,” this natural occurrence results in rupture-like patterns in the forest canopy that seem to perfectly outline the trees' striking silhouettes. Since scientists first started studying the topic in the 1920s, crown shyness has been observed between trees of the same and different species in locations across the globe.