At an estimated $40 million, this is one of the most expensive animated films to be funded from China, although it was made by an American production house.
Frazier and Giles, the bickering, well spoken Crane birds, are an obvious affectionate reference to the characters of Frasier Crane and his brother Niles from Frasier (1993).
A US-Chinese co-production that was made independently of the Major US studios/distributors and funded by Chinese backers.
When "Carl" is trying to heal "Peng's" wing, the trees they are part of the Zhangjiajie National Forest Park which is the same park used as inspiration for "Pandora" in the movie "Avatar".
Craig Ferguson's sixth theatrically released animated movie, after Dragons (2010), Winnie l'Ourson (2011), Rebelle (2012), The Hero of Color City (2014), & Dragons 2 (2014).