Posted by Gigi Allianic, Communications Photos by Jeremy Dwyer-Lindgren/Woodland Park Zoo One of the three adorable Humboldt penguin chicks to recently hatch at Woodland Park Zoo. World Penguin Day is today, April 25, a special day to celebrate all penguins on the planet and the recent hatching of three Humboldt penguins at Woodland Park Zoo. The three chicks hatched to three different sets of parents at the end of March and the first week in April. Most penguins mate for life. Incubation for penguins takes 40 to 42 days, with both parents sharing incubation duties in the nest and day-to-day care for their chicks. Penguin keeper Celine Pardo checks on the health of each Humboldt penguin chick before returning it to its parents in their cozy burrow. Woodland Park Zoo has one of the most successful Humboldt penguin breeding programs in North America with its new hatchlings bringing the total number of successful hatchings to 80 since the zoo’s first breeding season in 2010, a year after