From swimming faster than Olympic athletes to proposing with pebbles, penguins are full of surprising and lovable traits.

Puffins are one of Britain’s favourite birds. With their smart black, white and orange markings, adorably concerned expressions, and comical movements, we just love puffins in the UK.

Secrets of the Penguins premieres April 20 at 8/7c on National Geographic, with all episodes streaming April 21 on Disney+ ...