Yes, it is illegal in the US to have the feathers of a red-tailed hawk. In fact, it is illegal to have the feathers of any native migratory bird. All native migratory birds in the US are protected by federal law (Migratory Bird Treaty Act) and it is illegal to have any protected bird, their eggs, their nest or even their feathers. http://www.npwrc.usgs.gov/about/faqs/bir… states: Anyone desiring to possess migratory birds or their parts or products should be aware that all of these are covered under the Migratory Bird Treaty Act (16U.S.C. 703-712), which implements a series of international treaties designed to protect migratory birds. Some key provisions of the Act are worth keeping in mind: Wording of the Act makes it very clear that most actions that result in “taking” or possession of a protected species or its parts or products is a violation of the Act. Specifically, the Act states: “Unless and e