Birds of the same feathers flock together, and when they flock together they fly so high.

Feathers predate birds.

Eagles commonly fly alone. They are crows, daws, and starlings that flock together.

Fine feathers make fine birds

The corps has to almost breathe together. It's like when you see a flock of birds moving together and they're absolutely precise - it's beautiful, isn't it?

The haft of the arrow had been feathered with one of the eagles own plumes. We often give our enemies the means of our own destruction.