They are sexually dimorphic (have two distinct gender forms); males are slightly larger and have a larger, thicker, and different colored bill. Both sexes are black and white with an off-white head, red-orange bill, and pink skin around their yellow or brown eyes. They also have black legs and feet. Their wingspan is 12.5 to 15.2 inches. Juvenile red-billed hornbills look very similar to adults but have a smaller bill that is plain and brownish-yellow.