Feathersome

I've watched in the azure the eagle's proud wing, / His soaring majestic, and feathersome fling—— / Careening in liberty higher and higher—[...]

With the rise of writing 'leaf' was taken over as a reasonable word for the piece of material on which to write and 'quill' for the instrument with which to write, though the quill gradually became less and less feathersome.

Furthermore, the birds orientate themselves carefully with regard to the sun and gently flap their feathersome wings to increase convective cooling.

They didn't have to move to the east with the more feathersome Arapaho in '75 because they chose to be self- supporting and law-abiding residents of this here state capital.

"Nothing to worry about. Just a bit of dungeon work — does a man good to do an honest day's work now and then. Mind you, I do miss the royal, um, you know . . . plumpy-feathersome- spring-'n'-bounce?"