Be carful never tame these until you get a rockdrake utherwise you are basically sacrificing 2 drakes so get a drake so you can easily gather eggs I world Recommend waiting until you have 3 drakes because early game loosing a drake is bad
Seems like raising a rock drake 1st will help you tame these. 1st raise a drake. 2nd collect a bunch of rock drake eggs. 3rd find a basilisk and while riding the cloaked drake drop the eggs one by one and it will eat them.