Lure them away from their nest (I recommend using an argy and picking up another survivor, it keeps them interested longer). Grab the egg/eggs and head home. You will need 16-20 campfires to hatch them and be indoors (you will need 20 if you want to hatch them through the night). Once they mature, which isn't too hard if you have plenty of meat and time, they are great tames being they are powerful and have amazing abilities. Up if this is helpful.