I don’t even know why they cause it “folklore” as if it is some kind of legend. This behavior by the White Ibis is based on many years of observation by the Indians who observed all kinds of animals very closely.
I was thinking the same thing! Why would it be called folklore?
As far as your other post, penicillin was known by people far longer than when it was “discovered”. But, like the horse soldier, rejected by many educated people.