PRO TIP! When hunting for one of these make sure the creature u are riding on has its follow distance set to low so when u get knocked off you can get straight back on asap. If you do not have this setting enabled you will get knocked off and if your using a bird you will NOT be able to reach your bird when getting attacked usually leading to death.
One day, I was in the redwoods with my assault rifle killing terror birds, and then out of nowhere, this boy jumps out and scares the flip out of me. So I run back to Pterry Cruise, (my pteranodon) and fly as fast away as I could. I circled back and filled him with holes.
you can find them in red woods use dire wolf to find them when they do a sniffing emote or use any dino you have that has lotls of hp to knock it out and distract it they appear as little random mud puddles or dent om the ground