Crown shyness

Crown shyness-It refers to the uppermost branches of certain tree species that don't like to touch one another.The behavior was first observed in the 1920s,& multiple hypotheses & assumptions trying to explain it have been presented since then.Some believe it occurs in order to reduce the spread of harmful insects while others believe that trees are attempting to protect one another's branches from getting cracked and broken in the wind by keeping a safe distance from one another.It is also thought that ''crown shyness'' happens so that trees can optimize light exposure to maximise the process of photosynthesis done by the tree leaves.