Hatching: you need a very hot area. Use standing torches in a circle (10 to 15). Or build a room with a lot of air conditioners.
Imprinting and baby survival: Make sure you have wyvern milk. They only consume that for food when babies. You have to manually feed it to them until they are juvenile. It is also the only food they will ask for during care. Also set the follow behavior to lowest and disable wandering in case they wanna walk.
Wyvern milk can be obtained from knocking out a female wyvern and looting her. You get 5 milk. Doesn't respawn on same female.
Alpha Wyverns can be killed and looted for 50 milk.
Milk can be stored in preserve bins but not fridges.
Wyverns have 3 attacks. 3rd attack changes from flight to ground. Primary=bite, secondary=breath, tertiary(flight)=pick up creature, tertiary(land)=wing flap that pushes back enemies and knocks down trees(collects thatch more than wood)
No saddle needed. Friends can stand on back. Dismount doesn't throw you.
*Finding out you can tame dragons*
"YEEEEESSSSSSS DRAGONS YEEEEEAAAAASSSSSSS"
Wiki: "You must go into its nest with a fast bird, steal an egg, run away from 50+ wyverns trying to kill you, go back, get a female wyvern, knock it out, get its milk to feed your baby wyvern, raise your baby wyvern for many real life days, never sleep, starve, make sure you got lots of milk, get arthritis, play non-stop, never see society again, boom you have yourself a wyvern."
Imprinted Snow Owls are amazing for stealing eggs. They get a 20% speed boost once imprinted. That along with the glide makes them faster than Wyverns.
If you get their stats high enough you can kill Wyverns with them as well even an alpha wyvern if you keep it chasing you with their wide turning radius avoiding most of the damage.
The freeze heal is nice after you have been hit with poison breathe quickly gain your health back. Just bring some food for your hunger.
If you desperatly missing milk (and if you have no life) you can just give to your growing wyvern a enduro stew every 15 minute, this while prevent her for losing health when her food while reach 0, and while keep up the matuation process
When walking your baby wyvern don't think to yourself I'll just take it for a little swim through this lake. Because as soon as it hits the water it starts to fly and it won't stop! When you whistle to stop it just starts to fly off into the sunset. Say good buy to your wyvern and all the milk in its inventory.
Don't be afraid to go for eggs with a Pteradon.. A Pteradon with 1200 to 2200 stam can out run a wyvern after the nerf using the sprint speed and the barrell roll ability on them. Common misconseption is that you can't use them anymore after nerf.