The red-billed hornbill is a common and widespread bird in sub-Saharan Africa. It is a medium-sized hornbill, with a length of 30–42 cm (12–17 in) and a weight of 150–270 g (5.3–9.5 oz). It has a long, curved red bill, which has a casque on top. The casque is made of keratin, and is hollow. It is thought to help the bird with thermoregulation, and may also be used in courtship displays. The red-billed hornbill has a black head and neck, a white chest and belly, and gray upperparts. The wings are black with white bars, and the tail is black with a white tip.

Red-billed hornbills are found in a variety of habitats, including savanna, woodland, and scrub. They are social birds, and live in groups of up to 10 individuals. They are omnivorous, and their diet consists of fruits, insects, small mammals, and reptiles.

Red-billed hornbills breed in tree cavities. The female lays 2-4 eggs, which are incubated by both parents. The chicks hatch after about 18 days, and fledge after about 30 days.

Red-billed hornbills are common birds, and are not considered to be threatened. However, they are hunted in some parts of their range, and their habitat is being lost to deforestation.

Here are some additional facts about red-billed hornbills:

• Red-billed hornbills are able to close their bills with a loud snapping sound. This is thought to be used to defend their territory, or to attract mates.
• Red-billed hornbills are good swimmers, and have been known to catch fish in rivers and streams.
• Red-billed hornbills are preyed upon by a variety of animals, including snakes, eagles, and hawks.

I hope you found this article informative. Please let me know if you have any other questions.