Today in most of the world (April 25th) is World Penguin Day. This celebratory day coincides with the annual northern migration of Adelie penguins. This intrinsic migration pattern is conserved across generations. Native to Antarctica are six breeding species, Emperor, King, Chinstrap, Adelie, Gentoo and Macaroni penguins. Most penguins are monogamous and have distinct calls, enabling them to locate their mates in large groups. Penguin species lay up to two eggs per mating season with the Emperor and King penguins laying only one egg. Alarmingly, of the 17 recognized living species, 11 have been listed as Vulnerable or Endangered. The Yellow eyed Penguin pictured below (photographed January of 2020 in the sub-antarctic islands is the worlds most endangered penguin.