>>26709478You absolutely can, if you're willing to put in the investment of some time and effort. Most Western countries and US states allow some form of legal falconry, requiring either an apprenticeship with a master falconer, passing an exam, or both. After this point you are free to trap wild hawks (usually fledglings, and usually from a restricted list of species as a journeyman) and keep them as long as you like, though most simply release their hawks after the first winter and trap a new fledgling.