I would use a tapenjara with at least 240% speed because they are more maneuverable then a argentavis and then have another player on the ground with tranq darts or arrows to knock it out when the player and the tapenjara distract the wyvern
I got a level 150 lightning egg and I was so excited to hatch the egg...that when I went to put the egg down I accidentally ate it instead. :( ps4 users: R2 ISN'T GONNA DROP THE EGG YOU'RE GONNA EAT IT LIKE ANY OTHER EGG. REMEMBER THIS. LOGIC BEFORE EXCITMENT.