The easiest way to tame these guys is to fly above them on a bird and drop fertilized eggs from above. If they aggro onto something else you can swoop down to gain their focus until they're back to the spot you want, while you have a tribemate kill what they were after. (*cough* pigs *cough*) Then fly back upwards to loose agro easily.

Also.. Lvls on eggs don't matter! A lvl 1 egg works just as well as a 150!