He glanced at the indicated ledge, and I could see his wings flex nervously.

The torn wing was flexing and twisting, she could see the wrinkles appearing in the smooth metal skin.

The tallest visitor sang on, its wings gently flexing.

Upon arrival, it made a hard landing, causing the wings to flex significantly.

Her wings flexed and fluttered like blades on a fencer's sword.

The wings flexed up and down and the angel smiled with a saucy sort of sanctity.

Two feet jut out and back, in a hokey-pokey sort of move, then its wings flex a little without lifting.

The wings flexed up and down in close harmony.

The one wing flexed and stretched, but the other wing did not, for it was the hand that Nafai held in his own.

His shoulders slumped a little, his wings flexing until they touched the dresser.