During the summer, Hippogeese molt all of their flight feathers. During this week-long period they are unable to fly and congregate in large flockherds for protection. Creatures seeking to capture or kill Hippogeese often target them during their molting period. The preen gland of a Hippogoose is prized for its waterproofing oils and alchemical uses. Carrying Capacity: A light load for a Hippogoose (flying or trotting) is 300 pounds; a medium load 301-600 pounds; and a heavy load, 601-900 pounds. A Hippogoose can drag 4,500 pounds on the ground, but not flying.