The Gacha cannot be carried by any Extinction flyer. They also require being spread out about 12 foundations apart IF they’re the same gender. Breeding pairs are okay. You must manually turn their resource collection ON after taming; it is off by default. They eat meat as babies and all levels should be placed in Crafting Skill. Also, take a look at their production tab! Each gacha has a custom loot pool and you can choose specific resources for it to drop, which will NOT impact your chances of getting items.
In order to get the tamed Gatcha to drop loot crystals make sure you have owl pellets and stone in its inventory. 1 owl pellet + 20 stone per loot crystal. If you have tamed snow owls just park them near the gatcha and the gatcha will pick up the pellets automatically.
Warning: Do not throw anything you want to keep on the ground near them! Both babies and adults will automatically pick up and EAT IT! Found out the hard way when a tribemate tossed me an Indy grinder near a baby gatcha...
When you tame one, you should have them on wander in your base so they can collect their own recourses and feed themselves. I guess this only works if you have a big safe space for them and they do leave all the crystals around everywhere but it can make feeding then a lot easier. Hope this is helpful.
Day 1: Gatcha dropped ramshackle riot boots, ASCENDANT TORCH, metal behe gate, MASTERCRAFT LONGNECK, journeyman shotgun, apprentice pump shotgun, and journeyman assault rifle. Was a good day for just dropping stone on the ground XD