(for mobile) get an argie and level it to 135 to 145 movement

And here's what you need

- multiple grapples

- crossbow

- long neck (or crossbow)

- tranq darts/tranq arrows/toxicant arrows

- (optional) 10x soothing balm

- 3-20ish rex kibble (or prime meat at least 30)

- multiple parachutes

-(optional) spike walls (to protect it)

Now find your quetzal go next to it jump off your argie deploy your parachute then grapple to your argie whistle attack target at the quetzal shoot the quetzal with your tranq ammo of choice your argie will follow the quetzal and try to attack if your argie gets to close whistle passive then again attack target once far away enough. Once it goes down get on your argie and fly down to it as fast as you can so it doesn't get attacked by other dinos (make sure it does not fall in water)

then remote use your balm give it the kibble or prime meat protect it and then enjoy your quetzal! (Saddle level 76)

Or buy a tannery with 50 amber then get more cures with more amber if you don't feel like waiting to get the levels

Thank you for reading! :D