Imprint,
Imprint, for the purposes of falconry, means a bird that is hand-raised, from 2 weeks of age until it has fledged, and has identified itself with humans rather than its own species. An imprinted bird is considered to be so for its entire lifetime.
Source
50 CFR § 21.3
Scoping language
In addition to definitions contained in part 10 of this chapter, and unless the context requires otherwise, as used in this part: