When I was lv 50 or so I got rid of my first ptera to make place for an argy, but then I met another ptera just lifting up from the ground. It was a mere lv 7, but with an almost pure black body from the tip of its beak to the edge of its wings. Just spectacular. So instead of the argy I was about to knock out, I tamed the ptera, and named her Duskwing. (I did get the argy later on but not by replacing a ptera) Even to this day she's still in my camp, as a lv 47, faithfully watching over the coast, ready to bring me swiftly to wherever I want to go, and providing nutritious eggs.