The kelvar in Quenya elvish means the
The kelvar are the moving life, the animals, in Arda. They are not the same as elves, men, and dwarves which are the Children and adopted children of Eru Iluvatar. The kelvar are of Yavanna. Manwe envisioned the eagles, but he did so in conjunction with Yavanna and her idea of protectors. Ents are intelligent protectors of the olvar (plants), made by Yavanna. Eagles have been seen to aid elves and men, the Children of Iluvatar.
Radagast was the Istar with special interest in the natural world, sent to Middle-earth by Yavanna.
Eagles (greater than kelvar) (see Non-humanoid Intelligences)
Ents (greater than kelvar)
Radagast (Maia, Istar)