This list of mythical creatures that begin with this letter and I am constantly gathering information from each continent, and is continually being updated.
Ibong Adarna (Philippine)
Ibong Adarna, also known as The Adarna Bird, is an early 19th-century Filipino epic poem that centers around a magical bird of the same name. The Ibong Adarna is often described as the most colorful bird in Philippine folklore. It is also thought to share a resemblance to other legendary birds such as the Sarimanok and the phoenix. It's appearance is of a rainbow colored Phoenix-like bird most of the time, but it changes colors 7 times.
It knows a total of seven songs that are believed to lull anyone to sleep as well as cure any type of afflictions; it changes its feathers into more colorful hues and shades after each song. Seven color changes of feathers for the seven songs. After the last song, it excretes waste, then finally, sleeps with its eyes wide open. Its dung can turn any living organism into stone.