If you drop a quetzal due to knockout, and it lands next to a giga...just know, the quetzal belong to the giga. Now you get to watch your would be quetzal get eaten by a giga. Now you can go home and cry.
I tamed one alone on the center. I only use the best crossbow and 100 arrows and 20 parachutes. It's easy to fly over it with your pterodactyl or someone else and then drop it, open the parachute and shoot it. If you think you are out of range then drop and open the next parachute so that you get no fall damage. And repeat it
The Quetzal is a behemoth of a creature with base stats that top the charts (health, stamina, weight, and torpor). The Quetzal's platform saddle make it an excellent choice for a mobile air base or even a caravan for transporting and gathering metal and other supplies on harder to reach areas. While its melee strength isn't as high as some might expect, its health and ability to carry weapons make it suitable to use as a war bird. Its preference for Rex Kibble make it difficult to tame, and even more so difficult to knock out in the air.