Volant

It's a volant bird.

Crest - A horseshoe ar. betw. two wings volant sa. Farrer

A demi-ostrich, wings volant proper.

A martlet volant. Motto - In Deo solo spes mea. Kay

Alexander the Great […] lanced himself in manner of a Star Volant in the Air, leaping out of the East into the West, […]

he turned to catch through the trees a flitting glimpse of her light dress, her volant attitude, as she sped silently and secretly back to the waiting group on the porch.