This list of mythical creatures that begin with this letter and I am constantly gathering information from each continent, and is continually being updated.
Vedrfolnir (Norse)
In Norse mythology, Vedrfolnir (Old Norse "storm pale," "wind bleached", or "wind-witherer") is a hawk sitting between the eyes of an unnamed eagle that is perched on top of the world tree Yggdrasil. In some accounts, Vedrfolnir wasn't an eagle. He was a hawk standing between the eyes of the eagle.
Vedrfolnir lived on the top branch of Yggdrasil Tree of Life flying above and observing everything above with a great sense of pride. The story of Vedrofolnir that captures most of our attention was the insulting battle between him and Nidhogg the serpent-like dragon living under the roots of Yggdrasil.