They will jump on you and murder you even if you're on a fricking wyvern. You are not safe from them no matter what animal you have. Just accept your slow and tender death. I learned it the hard way lmao. Scared the fckng hell out of me
Wanna find one? Simply mind your own business flying through the redwoods and they'll find you! Just make sure you can take some fall damage and that your tame is set to passive so it doesnt kill the thyla. (I know this seems like a joke but this is legit the only way I know how to find them.)
The redwoods are now basically a no fly zone, I lost a quetz, and a pter to these b******s. They jump out of the tree, rip you off your mount, and then pin you and your mastercraft armor to the ground and murder you.
If you wanna find them easily just tame a parasaur and use an arge to carry it into the red woods. Have the parasaur on turret mode so it can tell you where the thyla is. It may take a while but I see this as the safest way to find them. You just have to move slowly through.
Do not think that you're safe from them if you're not flying. They will still jump on you even if you're on land. So just don't walk too next to the big trees and you'll be fine
Also always bring some friends or dinos with u when going to redwood just in case lol
Was flying over the redwoods with my argie flew down and got massacred by one of these guys. I turned off my console without saving. The next time I booted up the game I was like 1000 metres above the redwoods my argie the same height but way too far from me, so I fell to my death. Took me like an hour to get my argie back.