An effective way to knock the Tapejara is to wait for it to land, equip a bola then run straight at it while swinging the bola, as soon as it does it's 'roar' then throw the bola at it before it flies away. If you don't bola it in time it will fly away very fast, if you get it out of your render distance then load it back in, it will have stopped flying away and be in a normal state, ready for you to try again.
All these tips here tells you how to tame it... but what they fail to mention is the fact, you have to breed it on land, can’t move the egg and the baby HAVE to STAY IN THE WATER!! Don’t push the baby on land or it WILL EXPLODE!!!! I just watch my baby explode right before my eyes!!! Never have I seen a Dino exposed before!!!
They are skittish but not anywhere near faster than humans. They have low torpor and health, so tranq darts are recommended. Tamed like any carnivore, kibble is Archeopteryx. Can be found anywhere in and around the swamps.