Penguins - Spy in the Huddle Episode guide
3/3 As the chicks become increasingly independent, their parents continue to protect them.
First broadcast: 25 Feb 2013
2/3 Newborn penguins are caught taking their first unsteady steps.
First broadcast: 18 Feb 2013
1/3 Emperor penguins cross a treacherous frozen sea to reach their breeding grounds.
First broadcast: 11 Feb 2013