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
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
I was with a decent size tribe with a bunch of friends.They raised a bunch of rock drakes when i joined them.However, there was one Rock Drake in Particular that was laying in the corner of the dino pen that has been neglected, never being used cause previous owner from the tribe has stopped playing ARK. The tribe decided that i earned the right to claim the Rock Drake as my own. It was only a 140, but i cherished that thing like a real buddy.I named him "Anon Loves me".Because he always had my back in the darkest time. When i first glided through the air with the drake. It showed me a side of ARK i never knew before, and showed me the oppurtunities the world had to give to me.
Unfortunatly the happy moments came to an end. We got attacked by a bigger tribe while i was on. My tribe leader insisted i flee and transfer servers. However, i could not take "Anon loves me" at the time cause of the sudden ambush. The Rock Drake and I looked at each other one last time before parting ways..
DO NOT USE 1 POUNT IF FOOD EVERY 15 SECONDS IN YOUR EQUATIONS (for raising rock drakes) I’ve seen many comments that say this but i have tested it and the babies lose 1 point of food every 10 seconds! If you assume it as 15 seconds your baby will likely die!
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
Another way to do the math for food stat loss when raising rockdrakes. They lose 1food per 15 seconds. you lose 4 food every minute. (My advice go up to 5 if your paranoid like me and get Arked. 60mins x 4food = 240, (240 is the total food stat loss per hour.)
Now take your total food stat and ÷ by 240, and you will have a correct time as well.
You have to steal an egg like a wyvern. I used a lot of ziplines and a high level ravager to get down there, used the pick to climb up to an egg and ran. The drakes nearby WILL aggro on you. I got on my ravager and ran away on the ziplines. Make sure you have a hazat syit to protect you since there is radiation down there.