May 21 2016, 22:41

A fascinating phenomenon right from your backyard, yet to find a scientific explanation.

https://www.google.com/search?q=Crown+shyness&safe=off&espv=2&biw=1280&bih=637&source=lnms&tbm=isch&sa=X&ved=0ahUKEwji7faq0uzMAhXk6oMKHTuPAB4Q_AUIBigB

A bit in the journal Science – http://www.sciencemag.org/news/2000/08/breeze-keeps-trees-apart