oupacademic: In addition to ostriches, rheas, cassowaries, and emus, penguins have relatively large

In addition to ostriches, rheas, cassowaries, and emus, penguins have relatively large eyes – a trait that may be due in part to their inability to fly.
Today, on Penguin Awareness Day, we’re interested in the little-known facts about these charismatic birds. What are some penguin facts you think we should all be aware of?
Background image: Penguin in the Arctic by Nick Karvounis. CC0 public domain via Unsplash.