If you're having trouble finding one, get on your bird and go to about halfway up a redwood tree. They like to climb trees and then glide from tree to tree so your chances of finding one in the trees are a lot greater. I found a group of five once in the trees. However, they will glitch when being grabbed from a tree. It might not always be in your birds talons... Anyway, if on the ground, bola it (without scaring it away like a tapejara) and tranq it. It has a low health pool though, so try to watch your arrows.

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