Three King Penguin chicks hatched at the Saint Louis Zoo's Penguin & Puffin Coast this January and February. The chick hatches after about 55 days. Its parents then continue to keep it warm under their belly flap for 30-40 days until it grows too large to cover. They continue to share feeding duties for about eight months. This handsome bird is one of the largest penguin species. As an adult, it weighs about 33 pounds, second only to the Emperor penguin.

The penguin chick keepers routinely weigh the youngsters to monitor their growth. After the quick check, they are returned to their parents. Don't miss the video of this below.

Photo Credit: Ray Meibaum/Saint Louis Zoo

Now you can see the chicks in action as they get weighed... and hear them, as these little ones can peep really loudly!