1100-1200 blood to tame 150 varies slightly each time, server rates seem uneffected, always tames at max bonus to levels. Don't wear glyder it bugs the web pull and they can't get you up to them. Parachutes in case they drop after tame or you get attacked during tame. Probably one of the best utility tames to get early even at low levels.
You can use baby oviraptors to pick up your bloodstalker eggs, and then the baby oviraptors die their body time is the same as the egg incubation timer so you can drag the egg anywhere until it hatches.