User blog comment:Lord Loss/Monster Hunter Frontier Season Forward 5/@comment-1011548-20121009212622/@comment-24.26.255.200-20121012223934

Pretty sure it's an Easter Egg like Loss says.

I can confirm that I've seen him in the jungle when I first started playing Frontier a long time ago; It's a very small chance, but he appears over the camp at a random time during the quest from what I understand. It can happen anywhere from the start of the quest, to the end. You just have to be at the right spot at the right time to see him fly overhead.

Oddly enough, I think it's a early method to show when elder dragons will soon invade the town during a quest; I remember shortly after this happening and went back to town, that people were looking for members to go on the town attack quests, such as Teostra, Kusha or Yama.

Could be wrong about it all, but I remember that part pretty clearly; Unless the timing was just from pure chance...