These are an essential. To get these EXTREMELY easy early game, tame a pteranodon and pump all its levels into stamina. Go to the Valguero Wyvern trench as it is the easiest in my opinion. Then time it perfectly and head in and grab the FIRST egg you see and dip as fast as you can. The level doesn’t matter because once you have one Wyvern you have unlimited basically. Do not stop until you are out of the snow area because they WILL catch up to you.
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