Víðópnir

In Norse mythology, Víðópnir is a mythological bird inhabiting the top of the Norse world tree, Yggdrasil — sometimes positioned on the brow of another cosmic bird.

Representation
According to the eddic poem, Fjölsvinnsmál, Víðópnir or Víðófnir is a rooster that inhabits the crown of the world tree, variously represented as a falcon, sitting between the eyes of the cosmic eagle Hræsvelgr at the top of the tree of life, Mímameiðr (Mimi's Tree), a vast tree taken to be identical with the World Tree, Yggdrasil.