Actually, I did a little deep looking and found out there is such an agency and an application form to collect feathers. I will cut and paste it below:
U.S DEPARTMENT OF FEATHERS AND ANIMAL PARTS
FORM 5623/5
APPLICATION FOR POSSESSION OF FEATHERS FROM PROTECTED AVIAN SPECIES
Please answer each question listed below. You must file a separate form for each individual feather, regardless of species. Penalty for perjury is not less than 5 years in prison and/or $10,000 fine.
1.) What species is the feather from?
a.) Waterfowl
b.) Raptor
c.) Upper Lake Winnipesoki Garbage Vulture
d.) UH-60 Blackhawk
2.) What is condition of feather?
a.) Pristine.
b.) Run over by various vehicles a few times.
c.) Came out of McDonald's dumpster (only applicable for seagulls, crows, and ravens.)
d.) Covered in fecal matter.
3.) What do you plan to do with feather?
a.) Fletch arrows (submit FORM 7789/3.6 ARROWS FLETCHED WITH RESTRICTED FEATHERS PERMIT for each individual fletching on each arrow.)
b.) Mardi Gras mask.
c.) Ribald activities (Please describe in detail using FORM 6969/3 CONFIDENTIAL USE OF FEATHERS.)
d.) A spirit told you to keep it.
4.) Where is the feather now?
a.) Glove box in truck.
b.) Cletus' back yard.
c.) Bedroom (see FORM 6969/3, fill out in detail, submit recent photo.)
d.) Hanging from rear view mirror.
5.) What color is the feather?
a.) Red
b.) Blue
c.) Striped green and white
d.) Magenta
Submit form along with $200 application fee to nearest office. Please wait 5 to 6 years for reply.