There are many different types of hornbill, several of which are common in Kenya. They have a mixed diet of fruit and insects.
Hornbills are fascinating birds that are monogamous and have unusual nesting habits. They breed by lying eggs in the cavities of trees. They begin to close the entrance to the nest cavity with a wall made of mud, droppings and fruit pulp. When the female is ready to lay her eggs, the entrance is just large enough for her to enter the nest, and after she has done so the remaining opening is nearly sealed shut. There is only one narrow aperture just big enough for the male to transfer food to the mother and eventually the chicks. During the incubation period the female undergoes a complete moult.
When the chick [or chicks] are old enough the mud barrier is pecked away and they fly off. Whilst in Samburu Game Park recently we saw the start of this breaking out.