the federal migratory bird act is important for all of us to be aware of. you can read more here:
http://en.wikipedia.org/wiki/Migratory_Bird_Treaty_Act_of_1918it leaves few options for legal feathers. these include geese, turkey and pheasant.
of course domestic birds such as chickens and turkey and other birds not native to the us like parrots and macaw are legal.
there may be a few others i am leaving out.
as mentioned this includes picking up individual feathers and of course road kill birds. they're illegal to possess regardless of how obtained.
i used to have a few hawk and other found feathers and some road kill wings.
once i realized just how serious this is taken and how costly it can be if you are found in possession, i got rid of all of them.
i am often amazed at how many folks i see at rendezvous etc with owl or hawk feathers in their hats or otherwise adorning something they have made or wear.
something to consider with all of this is-if you are caught with illegal feathers, the game wardens will likely come to your home. they will likely search and confiscate every wild animal item in yr house.
how do i know this-had a good friend accused by a neighbor of poaching a deer-they literally ransacked his house. took all the deer meat out of his freezer. he did get some items returned(the meat was destroyed without ever giving him the chance to prove it was legally obtained) and was never charged as he had all his past tags and could verify most items(he was not poaching-his neighbor was pissed at him about something totally unrelated).
even if they are legal. if you dont have tags for those deer or hides they will take them and keep them.
antlers, hides, bones, even "legal" feathers, arrows with feathers(sometimes it is very hard to distinguish wild turkey secondaries from some owl feathers- had a man argue with me at a primitive skills gathering about this. he would not believe the feathers i had fletched a batch of arrows with were wild turkey secondaries. he swore they were too "soft" and were thus owl-how could i have "proved" they were turkey if a game warden had the same idea?)
they may take everything that appears to be of animal origin including the meat in yr freezer and you
may, at a later date be given the opportunity to "prove" they were taken legally-once again keep those tags.
sorry to ramble on so but i feel it necessary to make sure those who dont know, understand the level of seriousness this issue can become.
there are plenty of sources for legal feathers. most hunters(gun or bow) do not keep turkey wings. depending on the part of the country you live in there may be turkey farms in the area-go ask em what they do with the feathers. many folks here and other archery sites are willing to trade feathers for other items. and of course you can purchase from dozens of sources.
ok i'll stop now...