Despite being too big, a stubborn emperor penguin chick refused to leave the comfort of his father's pouch.
As footage shows, his devoted dad was forced to waddle around on the snow with the large chick between his feet.
When Snow Chick's dad is left stumbling over his clingy son, Winslet quips: "It's starting to get embarrassing."
Eventually, the video shows his dad persuade him to leave the pouch and join other chicks, and he slowly figures out how to join their huddle to keep warm.
The series, which was filmed over a year in freezing conditions, appeared on the BBC in December.