Are Ents free?

[daeron]

Yavanna created ents to protect the trees and other 'olvar'. My question is , do they possess free will or are they bound to Yavanna like the dwarves were before Eru took over?

Their not having free will but carrying out the instuctons of Yavanna would mean that the Valar played a much greater part in the outcomes of the third age than would seem. The same thing can be said about the eagles of Manwe. If they were acting under the orders of Manwe, then their actions in the first age would mean that the Valar did not stay out as was said. It would mean that Manwe had a part in the rescue of Fingolfin's body, in looking after Gondolin, ........

So do you think eagles and ents are free willed? Orcs? trolls?