Photographer and wildlife ecology graduate Kathryn Lisko took these pics at Milwaukee County Zoo in Wisconsin. (H/t Daily Mail)
The Inca Tern (Larosterna inca) is a seabird in the family Sternidae.
This uniquely-plumaged bird breeds on the coasts of Peru and Chile, and is restricted to the Humboldt current. It can be identified by its dark grey body, white moustache on the both sides of its head, and red-orange beak and feet.
The Inca Tern breeds on rocky cliffs. It nests in a hollow or burrow or sometimes the old nest of a Humboldt Penguin, and lays one or two eggs. The eggs are incubated for about 4 weeks, and the chicks leave the nest after 7 weeks.
The Inca tern feeds primarily on small fish, such as anchovies. The species spots its prey from the air, diving into the water to grab meals with its pointed beak. Its call is a cat-like mew.