look up "indian thunderbird effigy" or something like that on ebay or the internet...those things have been made for years and sold in tourist shops or salted around beaches and "indian" sites. they are 100 % indisputably NOT historic or authentic.
I've seen one found and know it was authentic but that is the only one I know of that is authentic. I'm sure there are a lot that are but most are fakes...d2