When you want to tame a quetzal the easiest way is with a quetz trap if you don't have one ask someone if still no then tame a high level pteradon with about 1500+ stamina 175% movement speed and pick up someone in your tribe try to get headshots as that is the easiest way to knock it out faster and after you knock it out the person that was shooting drop him to guard the quetzal and try to build spike walls around it and the person on the flyer quickly as fast as you can fly back to base grab the kibble and narcotics and after you tame it ask someone if you can buy a saddle if you don't already have one HAVE FUN HUNTING
The fun way is to jump off and grapple to your argie and whistle it to attack and since argies are slow it won’t catch up in time so tranq till it goes out also bring parachutes and consider liking so more people will know
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.