I am not surprised at all.
If they could have left "written" accounts, we would have been even more amazed, I think.
But then why even doubt it?
The blue jay birds get attracted to a particular plant in my backyard at about August every year when its berries are ripe. Those berries get them "high", literally. So, in a way, they get drunk, deliberately.
(After the orgy, their flight ability becomes visibly impaired)
So, if I would write an observation about them, I could easily say that the blue-jays KNOW how to extract mind altering drugs...
:)))
they do!
Trial and error is not limited to mankind making innovations, I guess!
THX for the post!