The males rarely land, so you've got to use another flyer like a pteranadon to get close. I usually have a flyer trap set up, many examples on YouTube or whatevs. When you get close to them, eat a rare flower which will aggro them for like 12 seconds. Doing this you can pull them literally across the map as long as your tame can tank the hits. When you get it into the trap just hop off your dino, shut the gate, bola the tapejara, get your dino out. Shut the door again before the bola wears off and the rest is easy. Don't worry if it loses aggro, they run away but they'll usually stop just out of render distance. This can give you time to recover and go again.

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