I can only speak for PS4 but if you're playing on a single player world (specifically Ragnarok in my case) and you have the bug where wyverns aren't spawning or the nests aren't spawning, use " admincheat destroywilddinos " and wait about 1 in game day, maybe 2, then check they wyverns to see if they spawned and if the nests spawned, worked for me.

PS. If you play single player, you should probably just host a non dedicated server and put a lock on it. In my experience I've never really had problems like they wyverns not spawning or their nests not spawning.

Hope this helped, it could work for Xbox too, idk if PC has the same problem but if you're experiencing this glitch then try this out. up this so it can hopefully help people with this glitch!

More Wyvern Encountering Tips