Actually I checked some sources, and I found some for three-legged crows:
https://en.wikipedia.org/wiki/Kojiki#The_Nakatsumaki_(%E4%B8...
https://en.wikipedia.org/wiki/Three-legged_crow#/media/File:...
https://en.wikipedia.org/wiki/File:Douze_emblemes_des_rites_...
https://en.wikipedia.org/wiki/File:Chengdu_2007_341.jpg
And by refuting this article, I thereby prove that which it sought to refute.