Upgrade your birds speed beacuse it has to be very very fast so you can out run all of the mature waverns and be very carful with getting the mother wavern knocked out to get the milk also be sure to have a back up bow or gun with you also bring a fellow tribe member it will make it much easier to knock it out.!!
You need an Argentavis 200% speed or more to outrun wyverns. Remember whips can pick things up, If you use them correctly it will be faster to get the egg and run! Enjoy! You also might want to get better than primitive crossbow or longneck to knock one out.
The best thing that me and my friend does is make a good trap, a lot of traps work so go look up some wyvren traps and build them. The second thing is you want a Argy with at least 175% speed, I have mine up to 200% so it works wonders. Once you have trapped it you want to stand a ways back so they can't activate a trap, then have you and a tribe member shoot with tranq arrows ( surprisingly it doesn't take a whole lot to knock out ). Once you have knocked it out have a friend or you to keep shooting it with tranqs so it does not wake up, grab the milk and fly back to base, you can eaither kill or leave the wyvren alone it's up to you.
The best way I've found to get wyvern milk is to lure a low level female poison wyvern, since their poison balls can't reach you an an argy, and pick up a friend, who is hopefully available, and just fly away and have the wyvern chase you. Have the friend constantly shoot the wyvern with some sort of tranq and watch it go down. You will need an argument with 200% speed to do so though... After this you should get 5 milk which is about enough to last for a couple of hours... just keep repeating this previews and you should be good to go
The best way to steal the Wyvern egg( which you will need to raise the wyvern) is to get a higher level Argentavis, and put AT LEAST 200% movement speed. That's the base speed needed to outrun a wyvern so you can get that egg back to your base safely.
Generators decay in Scorched Earth when they are on so be sure to set up a wind turbine. They also decay slower when inside an Adobe structure and also when no one is on. Be sure to set up the auto on function for your generator when your turbines goes offline. To do that go up to your generator and hold Y or E and there should be an option to kick on when your turbines go offline.
While this strategy doesn't really help much for getting an egg. For wyvern milk you could put a ballista turret on a parasaur saddle load a chain bola which does effect wyverns. Then use a fast argy to agro a female wyvern and lead it to the parasaur and down it for milk harvest. Then repeat until you have enough milk to raise your wyvern.
If you are near the wyvern pit in Scorched Earth or you are playing on a modded server that has SE spawns, set a few of your turrets on all targets. This will make encounters at your base result in no casualties.
Okay I’m not sure how many people know this but. With wyverns, you can pick up Dino’s and drop them (obviously). But when you are dropping them, you can do the Breath attack while spamming the grab button. This should give an edge in that PvP since you can just land that one tiny extra damage mark on a Player running on the ground. I find this Method best performed with the lightning wyvern, mainly because It’s the longest attack. I don’t recommend it with the Poison wyvern, since the poison spit is buggy sometimes. It can travel in any direction and you could kill yourself off the back of your wyvern. But if you manage to land a direct hit, it could deal devastating damage. The Fire wyvern works well with this too, especially in the night. Once you have someone enflamed, it’s like a short beacon and you could see them for a short amount of time (but if they go in the water, that effect is nullified).