Remember: The males wear their identification bands on the right wing. The females wear them on the left wing.
Mongo: He wears a red band on his right wing.
Mariano: He wears a light blue band on his right wing.
Penelope: She wears a purple band on her left wing.
The next time you visit the Milwaukee County Zoo’s Humboldt penguin exhibit, see if you can spot some of these penguins by their band colors.