Wonderful photograph of a stunning bird, but it's not a Cooper's Hawk.
Coops, like the other members of the genus Accipiter, have long tails for quick ruddering, long toes & tarsi for grasping their prey mid-air, and short rounded wings for maneuverability through their forested homes. Juvenile COHAs have straw-colored eyes and are mostly brown on the back with a creamy underside marked by vertical streaks. As they age, their eyes turn from yellow to orange to (eventually) a deep red. Adults have a slate-colored "cap" on the top of their square-looking heads, slate-colored backs, and brown-red barring on the breast.
I'm mostly familiar with raptors in the eastern U.S., but I believe this is a Ferruginous Hawk. I've never actually seen one, even in captivity, so be assured I am jealous.
Looks like this was a captive-bred bird, given the continuous (seamless?) metal band around its right leg. Do you recall its "story"? Was this at a rehab center? An educational program? Other?
Parc Omega (in Quebec) has a Birds of Prey show using rescued and captive-bred birds, which is where I took the pics. I'm afraid I don't remember the details, but some birds hadn't been with them long and were less inclined to fly were they were wanted. Raptors are a proud and grumpy lot