It's Game of Thrones. Here's why the duck is a GOT reference:
http://awoiaf.westeros.org/index.php/Rolly_Duckfield
And in a recent interview with Nicolai Coster-Waldau, he brought out a duck as a spoiler. Here are four animated GIFs from the interview (scroll down to see them):
http://winteriscoming.net/2015/03/28/game-of-thrones-hbo-nordics-qa-with-nikolaj-coster-waldau/