Quetzal is very essential to have, the best way to knock it out for begginers, is to mount on an argentavis and grab ur friend, let ur friend do the shooting ( pack urself with lots of arrows or trank darts if ur able to make them) and careful not to down it over the water. You can use tapejara, but to tame one is very hard so argies are ur way to go since their easier to tame.
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 manage to knock a quetzal out, try starve taming. If you never tried starve taming it’s just leaving a Dino’s hunger go to half way or lower and then you start feeding. I’ve done this many times and it’s very useful taming trick.