Kook aid, vinegar and water. Mix, add buck tail, feather etc. heat in microwave until solution is clear. Just as good as any other dye, is cheap and highly customizeable. Google: dyeing wool with kool aid. and yes I know wool is not the same as buck tail, but it works very well.
Tip: wash the product you wish to dye very well, with dawn or soda ash. The product needs to be as grease free as possible.
Pro tip: this can smell pretty bad, as much from the heated vinegar as the cooking deer hide. If you are married, do this in the house microwave at your own risk.