Non-Indians cannot legally possess eagle feathers

According to federal regulations, only enrolled members of federally recognized tribes can possess eagle feathers. Non-Indians (defined as anyone who does not meet that standard) cannot legally possess eagle feathers even if the feathers were gifted to them or if they found them. Eagle feathers can be gifted to another enrolled member of a federally recognized tribe and passed on to children who also meet this requirement.
It is highly recommended that a copy of the donor's permit to possess the feathers be obtained for gifted or inherited feathers. The forms required to request eagle feathers and a permit to possess them are found on the internet through a link visit: MB Permits.
The revised application no longer requires the signature of a religious leader, elder, or tribal leader, but only an OPTIONAL statement on the applicant's form about the religious ceremony in which the items would be used in and the applicant's signature. The tribal membership form which downloads as part of the same document does not require anything from the BIA, but only information from your own tribe and must be signed by a "certifying tribal official." A person must be 18 or older to order eagle feathers.
Anyone having eagle feathers and a permit to possess them also needs to obtain another permit if you intend to transport the feathers out of the country (or bring them in), such as when an American Indian goes to a powwow in Canada. See the link for "CITES Import-Export/Eagle Transport for Indian Religious Purposes" at the same webpage noted above.
Although it takes about 5 years to get a full body because of large number of applicants, you can get two wings in about 13 months or 10 feathers (2 tail feathers and 8 wing feathers) in 7 months. You can't get a full tail that fast since these are in high demand and are obtainable only as part of a full body. You can make application for additional feathers or bodies after you get the permit and feathers from your current request.
Additional information about eagle feathers visit: Law Eagle
The webpage for the National Eagle Repository, which receives and ships feathers, visit: NER.
There is no regulation allowing possession of hawk feathers by Native Americans (defined for federal purposes as enrolled members of federally recognized tribes) for cultural or religious use unless the person already had a permit and the feathers were obtained prior to the halting of such permit issuance about 18 months ago when the FWS determined that the Migratory Bird Treaty did not allow it. While this law might be revised in the future, an enrolled tribal member can still possess them because there is an internal memorandum and policy in FWS that conservation officers will not actively seek out and write violation notices for possession and cultural/religious use of such feathers by Native Americans. FWS is basing this on an interpretation of the eagle feather regulations.
Regional Centers of the US Fish & Wildlife Service, Law Enforcement Division

Bald Eagle

Pacific Region (1):  California, Hawaii, Idaho, Nevada, Oregon, Washington and the Pacific Trust Territories
U. S. Fish & Wildlife Service
Division of Law Enforcement
911 N. E. 11th Avenue
Portland, Oregon, USA 97232-4171
Phone: (503) 231 6125 ~ Fax: (503) 231-6197
Southwest Region (2):  Arizona, New Mexico, Oklahoma, Texas
U. S. Fish & Wildlife Service
Division of Law Enforcement
P.O. Box 329
Albuquerque, New Mexico, USA 97103
Phone: (505) 248-7889 ~ Fax: (505) 248-7899
Great Lakes - Big Rivers Region (3):  Illinois, Indiana, Iowa, Michigan, Minnesota, Missouri, Ohio, Wisconsin
U. S. Fish & Wildlife Service
Division of Law Enforcement
One Federal Drive
Fort Snelling, Minnesota, USA 55111-0045
Phone: (612) 713-5320 ~ Fax: (612) 713-5283
Southeast Region (4):  Alabama, Arkansas, Florida, Georgia, Kentucky, Louisiana, Mississippi, North Carolina, South Carolina, Tennessee, Puerto Rico and the Virgin Islands
U. S. Fish & Wildlife Service
Division of Law Enforcement
P.O. Box 49226
Atlanta, Georgia, USA 30359
Phone: (404) 679-7057 ~ Fax: (404) 679-7065
  Northeast Region (5):  Connecticut, Delaware, Maine, Maryland, Massachusetts, New Hampshire, New Jersey, New York, Pennsylvania, Rhode Island, Vermont, Virginia, West Virginia,
U. S. Fish & Wildlife Service
Division of Law Enforcement
300 Westgate Center Drive
Hadley, Massachusetts, USA 01035
Phone: (413) 253-8274 ~ Fax: (413) 253-8459
Mountain-Prairie Region (6):  Colorado, Kansas, Montana, Nebraska, North Dakota, South Dakota, Utah, Wyoming
U. S. Fish & Wildlife Service
Division of Law Enforcement
P.O. Box 25486 - DFC
Denver, Colorado, USA 80225
Phone: (303) 236-7540 ~ Fax: (303) 236-7901
Alaska Region (7):  Alaska
U. S. Fish & Wildlife Service
Division of Law Enforcement
1011 E. Tudor Road, Mail Stop 151
Anchorage, Alaska, USA 99503-6199
Phone: (907)786-3311 ~ Fax: (907)786-3313