At hatching, the chicks are covered with white down. Contour feathers begin to appear by 10–14 days, and the chicks become fully feathered with full plumage after 4–6 weeks. This plumage is typically pale greyish brown with a white lower back, rump and tail coverts; some white downy feathers remaining under the wings and underside of the body; black wing and tail feathers with a white and dark brown wing lining; distinct feathering on the greyish brown head, and dull yellow bare parts. After about 10 weeks when juveniles have fledged, loss of head feathers begins; and the dark, bare areas on the forehead and sides of the head around the eyes become visible. These dark bare areas are sometimes interspersed with dull orange spots. Nestlings also have a dark brownish grey bill and skin around the bill and eye.