Hieracosphinxes guard their territory ruthlessly against weaker intruders, seldom giving warning before they attack. They have no use for banter and riddles, making most efforts at diplomacy rather ineffective, but can be convinced to call off their attacks by convincing shows of force coupled with information on the location of weaker prey or a gynosphinx. Though poor fliers, they still prefer to fight from the air, the better to escape if the combat turns against them.