To know how much time need to the next feeding just do the next. Look the Food number# then that number multiply x 10, then divide /3600 and the result will be the number of hours until the next time need to be fed. F.E the food number is 1850.5 1859.5x10=18595 /3600 = 5.1 hours
A fire wyvern is one of the best you can have because they are resistant to fire damage so alpha wyverns are much easier to kill same with all the wyverns they can't hurt each if they are the same element but the bite attack still works on all wyverns keep this in mind
Killing an alpha fire Wyvern is also another way to get milk. When killed they have 50 milk in their inventory and a nice trophy to mount on your wall. Alpha wyverns will always be fire and they place a sick looking Wyvern glove skin in your inventory when killed.
Hatching the wyvern eggs can be very difficult. If any of you just play scorched earth to get the Dino's and transfer over to the island or center, I have a tip that makes it easier for reading the babies. Milk only lasts so long on scorched. But on the center and island when transferred it lasts 10 hours! And 24 hours in the obelisk. So raising on the center or island map is so much easier ! Make it doable for my tribe on the center. Had to make waaaay less milk runs. Hope this helps !
If you can get a high level lightning wyvern than you will be near unstoppable. You just need to upgrade health,melee,weight,and most of all stamina. Do all that and you will have an alpha killer and a prime raiding dino.