Board Thread:Spoilers!/@comment-4453062-20160217065238/@comment-1916997-20160217170509

Another interesting thing to consider is there is a story featuring The Firebird, that is similar to the Grimm Brother's The Golden Bird, and that story has been used as text in Henry's Storybook. For reference:

https://en.wikipedia.org/wiki/Tsarevitch_Ivan,_the_Firebird_and_the_Gray_Wolf

https://en.wikipedia.org/wiki/The_Golden_Bird