They lose 1 point of food every 15 seconds, so to time how long until they start starving, multiply their current amount of food by 15 and then divide by 60 twice. This will give you the number of hours left untill the food stat reaches 0.
((15 x food)÷60)÷60
I used a very effective method but it sounds like a joke, but it works fine: use a gasbag, 20-30 vegatible cakes for gasbag healing and like 10-15 stacks berries for gasbag food and at least 2 hazard suits. You can easily fly down to the spots where the nests are, then fly to the nests, steal the eggs, fly to the entrance of the complex and repeat it. Important: if you want to play safe, then only take the nests on the highest spots, because if you go for the lower spots, it can happen, that an army of drakes stuck you into a nest and your gasbag and you will die. If the cakes are empty, you have to go back to the "non radiation zone", cause after a time without healing the radiation is too much dmg for the gasbag. But this method only works fine, if you a) can control the gasbag and b) the gasbag should have at least 6-10k hp, 2-2,5k stamina and over 100k oxygen. And don't forget to regain stamina and gas every time.
Manas are prolly the easiest way to get eggs if u breed for a fast one it’s super easy make sure it has a good amount of health tho cus the radiation does get annoying it won’t kill u but you can never be too safe
Obtaining this creature will require you to enter the tek trench where puprle liquid and the nests of these creatures lay past the bioluminescent chamber, there you must steal an egg and raise in a cold environment feeding it nameless venom you can get by killing nameless
The rock drake trench can be found at 57,56 at the area of the map called grave of the lost. Recommend u bring a glider suit and climbing picks and if u have a good tame to fight the drakes. In the wild they can be invisible and can glide in the wild so watch out also wear a HAZARD SUIT it's needed. Lastly there are a lot of nameless in the area so bring a light source. Good luck and ohh it needs to be cold to hatch so air cons