@Emerald Heart
Deduction time.
Angry Birds got its fame as being the first popular game on iOS, probably due to being the first of its kind not programmed in Flash, which iOS didn't support. Following the trends, it's likely the song was written and made during the game's rise to fame, probably within a year since the game's initial release before the novelty burnt out. This is also supported by the graphics, both of the game itself and the animation, which lack the pizzazz of newer animation techniques. Plus, the video shows an iPhone as part of an ad, and since it has a fairly old-looking design {no fingerprint-reading home button}, definitely puts the song past the five-year mark.
So, with that in mind, I'd say the song pretty much matches the release of iPhone, give or take twelve months. Which... I don't actually know off the top of my head and, will make an educated guess {iPad 2 was still a thing in 2013 , and I think iPads came after iPhones} and say 2010.