Trust me, I tried both, taming without a taming pen is much easier. If your a descent shot you can easily take on out with tranq arrows and a crossbow. ( maybe a bow but don't be disappointed if it gets away) If your concerned about being safe when taming it ( which you probably should be) then you should tame one towards the top of the " volcano " next to the green obelisk. ( predators normally can't get up there.)

Easiest technique I've found is make a taming raft all you need it to build a raft, 3x3 stone floor, 2 high stone poles in all 4 corners, put stone ceiling all the way across the top so 3x3 above that, then use door frames all the way around except in 1 spot to fly the argy in, then opposite whatever side you leave open by one put 2 ceilings extending out, then put a ceiling over the whole thing. If an argy is following you it'll fly sleightly higher than you, fly under the hole you made and the argy should fly right in, land your Petra or any other flyer on top, drop onto the extended ceiling and tranq that mother in the face!

Argys are great for taming dung nettles on the Center. Go to the cave on lava island where there is a small bridge. If you fly down there will be lots of cave dwellers (snakes, spiders, bettles, etc.). Grab a dung bettor and bring it up to the first floor (before the lava bridge leading out). Drop the battle and tame in peace.

Lure this bad mamajama of a bird into a cage. It doesn't have to be fancy. A Dino gate(optional) some fence foundation and doorframes will do the job. Always aim for the head when shooting tranq arrows/darts. More damage = more torpor damage. Wait 4 seconds between shots with tranq arrows to get full effect per arrow. Very valuable tame on scorched earth!

Scorched earth tip . Firstly get a moth so you have a basic flying mount , the. Fly over to the moutains , as the mountains are high if you knock out on them it's easy to end up with nothing being able to get to you at all hence an easy hassle free tame . Only issue is the tend to want to fly off once your close to knocking them out and this can compromise were you want them to land , if your going for something sub level 20 hit it with 2 body shots this will not raise the torpor enough for it to want to fly off , finally hit the 3rd shot in the head this will cause it to turn around but generally it will fall pretty quickly afterward , if it lands on a slope just make sure you can 2 pillars and a few celings this way you can make a safe ledge to stand on while the tame is complete . I've done this several times and not lost one yet

Best way iv ev seen is if you do tame in the wild just have a ptero with you and follow it it's not that it never comes back he just DE argos usually I have a friend carry me with there ptero and just tranquil arrow or rifle it down its much more fun building a safe place and protecting it in the wild 5he it is bringing it to a house xD