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Crown shyness

is a phenomenon in which the crowns of fully grown trees do not touch, forming channel-like gaps, seen here from above.

https://t.co/phvU2fPLU2 https://video.twimg.com/ext_tw_video/1171794107737542657/pu/vid/640x640/C6NQ16LULLRJeX4d.mp4