African penguins have white, bare skin over their eyes that becomes bright pinkish-red in very hot conditions.
African penguins have a distinguishable bit of white, bare skin that resides over the eyes in a horseshoe-shape. This skin can become bright pinkish-red in very hot conditions.
• Image | © Bernard DUPONT, Some Rights Reserved (CC BY-SA 2.0)
• Sources | (BirdLife International, 2016; Cooper, 1978; Pearce, 2011; Stefoff, 2005)
