zoologicallyobsessed: Ever Wondered How Emperor Penguins Survive in Temperatures of −40°C ?  Their feathers are densely packed, and have in fact the highest contour feather density of any bird, allowing them to maintain a constant body temperature of 38°C in freezing waters.  Depsite previous reports that filoplumes and plumules aka.downy feathers, are absent in penguins, […]