The 50.cal is the best but the 308 bolt action can work too!

You can go to the volcano theyre usally around the sides of the volcano! but be carefull when they attack you Crouch!

aim at theyre neck or head you might miss sometimes but if you get the perfect shot while aiming at the neck or head you will hitt it and kill it instantly!

Also if your quetzal gets shot and it glitches meaning you can see it stuck in the air just flying. Just walk away for abit or wait for it to fall down! That might just be your connection or two people shot at the same quetzal!