Here is a pretty cool article and video about the practice regimen and expectations from the trainers of the eagles that fly in pregame. It’s definitely worth the read!
A volunteer, wearing a glove over one hand while clutching a leash with Spirit’s breakfast attached to it in the other, waits patiently on the sidelines. As Spirit soars past the suites lining the eastern side of the stadium and glides over the student section, the volunteer dashes to the 50-yard line, with the bait bouncing close behind on the turf of Pat Dye Field. Spirit sticks the landing and gets his reward.
You can read the entire article here.