Tame a bunch and make a penguin farm for poly. Nine females to one male works great. Set up a bunch of ACs and have them on wander when the babies hatch club them. Free poly within the comfort of your own base!
-Once tamed the Kairuku acts as a mobile heater. It adds 35 to your hypothermic insulation (your how cold you are stat) the more Kairuku you have compounds their effectiveness.( the further away from the penguin the less effective it is)
-Can be used for breeding so you don't have to waste mats on Air Conditioners