You can get more organic polymer out of dead Kairukus, if u hit them with a wooden club or sword. Baby Kairukus anyway, will give u more organic Polymer than adult Kairukus.
Kairuku

What ARK players use the Kairuku for, and how to get the most out of it in ARK: Survival Ascended & Evolved.
Kairukus are the main source of organic polymer, which is needed for example to craft the Ghillie Armor. Organic polymer will spoil in 30 minutes/piece and it can't be put in a refrigerator or a Preserving bin to last longer, so be careful.
Another use of the Kairukus is…
Kairukus are the main source of organic polymer, which is needed for example to craft the Ghillie Armor. Organic polymer will spoil in 30 minutes/piece and it can't be put in a refrigerator or a Preserving bin to last longer, so be careful.
Another use of the Kairukus is, that they work as living Airconditoner and will keep your fertilized eggs at the right temperature, if they are placed by them.