I'd suggest using the argy-grappling hook method for a solo quetz tame. If you have a tribe to help you, use the pick-up-friend-with-a-bird method and let them shoot at it. With both methods, however, try to avoid going into any redwood forests, as the quetzals can be hard to find from within the trees. Also, if you think you're close to knocking it out, make sure it isn't near water.