Ko da yake kusan dukkanin nau'in penguin suna da asali a Kudancin Hemisphere, ba a samo su ba ne kawai a cikin yanayin sanyi, kamar Antarctica. A gaskiya ma, kawai wasu nau'in penguin suna rayuwa a kudu. Da dama suna rayuwa a cikin yankin mai laushi; daya, penguin Galápagos, yana zaune a arewacin Galapagos Islands, amma wannan ya yiwu ne kawai ta hanyar ruwan sanyi, mai arziki na Antarctic Humboldt Current wanda ke gudana a kusa da waɗannan tsibirin. Mawallafa da dama sun nuna cewa penguins misali ne mai kyau na Dokar Bergmann inda yawancin jama'a masu girma suke rayuwa a mafi girma fiye da ƙananan jama'a.
Yankin Kudancin Duniya