Once hatched, infants are highly altricial, often having little to no downy feathers.

Juveniles resemble adults, with the exception of some downy feathers on the head.

Long downy feathers covered almost the entire head and neck, torso, upper legs, and the first half of the tail.

Inside, it lines the nest with more than 2,000 downy feathers to insulate the nest.

They are covered with downy feathers that soon grow to adult feathers after hatching.