I third it, but the genuine ones need to be split out from the man-made ones.
I would really like to know more about the genuine ones, period.
It is well known locally many are man-made hoaxes, and the hoaxers insist they are ALL man made, which they obviously can't be. I would like to know what is behind why they go to so much trouble every year, and risk arrest for damaging crops, to create them? e.g. are they being paid to create them for disinformation? they claim they are sent them subconsciously.