If you have a tapajera with a three person saddle you can hop on the tapa fly it around until you find a quetzal and shift to the front seat tell your tapajera to "move to" the quetzal and when it gets close enough shoot the quetzal with a tranquilizer dart and repeat until it crashes. Works better with two or three people so you can line up shots for the passengers.
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.