If in the event you are unfortunate enough (like me!) to be chased by a wyvern while you’re on your Argy and can’t escape and fighting is the only option, circle around the wyvern as tightly as you can so it can’t use a breath attack on you. Keep as close to it as possible and keep hitting that attack button. However you should only do this if your bird is a high level and has decent stamina, health and melee. Otherwise, gtfo if possible. I just got jumped by a lv. 190 lighting wyvern and I have no idea how my bird and I survived. Quetz is a very good boi and killed the wretched thing. Argies are best flying mounts, change my mind.