Aviana appears to be teaching Druids of the Talon how to better work with their bird forms. She will also give heroes the opportunity to take her test of flight and earn their own wings with her blessing.
Colors used by classes
For Pre-Legion Harpies it was easier to classify the different classes as they all pretty much followed a similar naming convention, but for Legion there's so many different ones, i'll be organizing them by color and then listing the classes for each. Hover over the Non-Named Harpies to see Class.