Mother hens fluff their feathers when they sense danger. They can appear to be twice their normal size. When they fan out their tail feathers, they look like turkeys. This behavior begins before the chicks are hatched. A sure sign a hen is sitting on eggs to hatch, is when she goes around fluffing her feathers.
The whole brood takes a break when mother takes a dust bath. A chick’s day is punctuated with frequent breaks: dust baths with mom, warm naps in her feathers, lazy time in the sun.