Good grief, don't get carried away with the narrative of having a real hawk/falcon. There are many legal falconers that own hawks/falcons and hunt with them, legally. Finding one that would bring their birds to indoor stadiums, however, might be problematic, and flying them indoors may be out of the question. But finding a falconer that will be at UND sporting events with the hawk sitting on his arm is not totally farfetched..
Flying one in the Ralph to takes a live rodent on the ice would be cool, but would bring up even more problems fortm PETA and the like, and would not be doable, even if you found a falconer that would fly his bird indoors under artificial light (not going to happen). But it's a cool concept.