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
When egg hunting set up a pill box (6 steel walls, 1 steel ceiling, 3 auto turrets, 1 steel door frame and one reinforced door) set turrets to target wild creatures throw in 1k bullets and lead the wyverns into the danger zone
Make sure to stock up on milk and preserving salts. My tribe put off getting milk and had to rush to farm it becasue we got triplets. While you may not be concerned with this, that 2% chance does occur.
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.