This illustration provided by Gerald Mayr shows the size of an ancient giant penguin Kumimanu biceae. On Tuesday, Dec. 12, 2017, researchers announced their find of fossils from approximately 60-55 million years ago, discovered in New Zealand, that put the creature at about 5 feet, 9 inches (1.77 meters) long when swimming, and 223 pounds (101 kilograms). (Gerald Mayr/Senckenberg Research Institute via AP) Gerald Mayr Senckenberg Research Institute via AP