If you want to knock down a Tapejara prepare yourself with:

-a bola

- 5-20 tranq arrows or 3-15 tranq darts (you will need a lot less if you aim for the head).

Don't get too close to the Tapejara, it will flee, instead try to approach it slowly and hit it with the bola before it tries to run. When the Tapejara is trapped in the bola shoot it in the head with tranq arrow or darts, when the Tapejara gets knocked down feed with some meat.