Pretty easy to tame. If you are taming a low level like 50, trap it with a bola and attack its head with a club until its down. If you are taming a high level like 120, throw a bola and use a few tranq arrows on the head to knock it out. Once you knock it out, be sure that you have raw meat and narcotics to tame it up and keep it unconscious.
When knocking pteranodons out, be sure to have a bola, it doesn't take many tranq arrows to knock it out. Once it is down, put spike walls up around it (with a little space so you can go in and out) so it doesn't lose taming efficiency or die.
To kill pretty much anything on these birds, tame a high level, then pump stam to 3k, then the remainder in melee. Barrel roll into alphas etc. But keep eye on Stam. Never regen Stan on ground, know your ledges!