[Curunír] gathered a great host of spies, and many of these were birds; for Radagast lent him

[Curunír] gathered a great host of spies, and many of these were birds; for Radagast lent him his aid, divining naught of his treachery, and deeming that this was but part of the watch upon the Enemy. ~ The Silmarillion, Of the Rings of Power (Art: “Radagast the Young” by Miandelam on DeviantArt)