fluff out

fluff something out

[for a bird] to move its feathers outward. The parrot said good night, fluffed its feathers out, and went to sleep. The bird fluffed out its feathers.
See also: fluff, out
References in classic literature ?
To fluff out her curls, put on fashionable dresses, and sing romantic songs to fascinate her husband would have seemed as strange as to adorn herself to attract herself.
The Local Interstellar Cloud isn't the only cloud of fluff out there, and now Opher theorizes that other interstellar cloud formations may be highly magnetized too.