They collect large amounts of organic polymer from baby penguins

Bola this big boi! It’s favorite food is a club to the face.

Just a quick hint for any flying creature affected by the bola, you can, if you’re aim is good enough, knock creatures out of the sky with the bola.

(I figured this out when I tried it after watching How To Train Your Dragon 1, for those who are wondering)

Bola it, then just trank it :)

When leveling up your pelagornis, head to the water. Tilt the head down and start killing fish. The pelagornis harvests the meat as it kills them, and does multiplies damage to fish.

You can tame with cooked prime fish meat

Don't knock it out in or above water. Bad idea.

On crystal isles they eat cooked prime fish meat and regular cooked fish meat

Fist find it and wait until he/she land and then bola it hit with tranq arrow feed him/her kibble if you feed raw fish meat then he takes hour to tame use compy kibble to tame it