A baby rockhopper penguin chick has been born at Chicago's Shedd Aquarium.
Officials at the aquarium say the chick hatched about a month ago and is gaining weight and eating. The baby bird is nesting with its parents at the aquarium. Shedd experts say the chick weighed 75 grams when it was born. It now weighs 1,019 grams, gaining about 40 grams every day. The chick's gender hasn't been determined yet.
Shedd animal care workers observe and weigh the check daily. They say milestones ahead include the chick learning to eat on its own, learning to swim and acquiring waterproof plummage.
Shedd Aquarium is involved in several penguin rescue efforts.