Adult rockhopper penguins (Eudyptes chrysocome moseleyi) on Nightingale Island in the Tristan da Cunha Island Group, South Atlantic Ocean

bird birds adult rockhopper penguin eudyptes chrysocome rock hopper nightingale island tristan da cunha island south atlantic ocean rockhopper penguin seabird sea bird flightless crested eudyptes nobody group groups social group social groups colony colonies