There is more to this than meets the eye. The restriction was placed for several reasons, first and foremost to stop the illegal killings, second to curb an overseas market for the eagle talons and feathers. Several cultures in the orient view them as a special medicine to boost sexual powers. They also view deer and elk anthers in the same manner. If strict restrictions were not placed on the feathers poachers would capitalize on the opportunity for their gain.
Two individual from here in Texas recently went to jail for poaching and shipping deer anthers to Hong Kong, one of the individuals had done business with my son and told him that they had shipped over two hundred sets of anthers that year, Some of these were road-kill deer, but most were spotlighted.