That's the plumage protection act. I forgot about that one. We have the fashion industry to fault for that one. Pretty sure that bit of legislation even came before the raptor laws. It actually seems a bit out dated with current fashion trends and their catch phrases(cruelty free, fur is murder, etc). Most of the feathers still in demand are being supplied by farm raised birds sometimes without having to kill them. Killing animals in the name of vanity just isn't trendy any more, go figure.
Meanwhile throughout the well to do neighborhoods across america, raccoons tip over trash cans, skunks spray pets, and beavers flood the expensive river front properties. I say wear fur and help protect your property.