Mr Pratt
The laws very from state to state, wildly! For example you can hunt snowy owls in parts of Alaska. In the lower 48 that will land you in jail. Possession of sand hill crane feathers will cause you some trouble in Michigan, in Alaska they are just left overs from dinner. With feathers you also get into international law. Macaw from a local bird that died is fine, import it and you'll have the local, federal and country of origins law officials after ya!
Thing to do is visit your local fly fishing shop, they know what they can/can not sell and the receipt protects you! Besides if you cant find the feather you want at a good fly fishing shop it doesn't exist!