When knocking one out for milk t can be difficult. It is even more difficult for tribes on their first time rasing wyverns. My suggestion is to build a trap and have some body with an argi kite him in. Then if you are on a prim server have somebody wait at the gate to close it. Have them close it when the wyvern is at the back of the trap where the argi has flown threw. Be prepared to have enough tranq arrows to knock them out. Two more things have a bed nearby to respawn. And be prepared to lose a lot of argis have some on stand by if one does. Good luck survivors you will need it.
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.