Von der Decken’s Hornbill

Von der Decken’s Hornbill is a small hornbill found in eastern Africa, including northern Tanzania. It is particularly associated with dry savanna, thorny bushland and open woodland where scattered trees provide nesting and resting sites.

Its inclusion in the Kilimanjaro National Park bird checklist confirms its relevance to the mountain's documented birdlife.

Unlike many larger hornbills that spend much of their time feeding in the canopy, Von der Decken’s Hornbill obtains much of its food on the ground. It walks through open areas searching for insects, small reptiles and other prey.

Its striking bill coloration and terrestrial feeding behaviour make it one of the more distinctive hornbills in the Kilimanjaro bird community.

Von der Decken’s Hornbill is associated with relatively dry environments, particularly:

• Dry savanna
• Acacia and thorn woodland
• Open bushveld
• Thorn scrub
• Semi-arid grassland with scattered trees
• Open woodland margins

Its presence on the Kilimanjaro National Park checklist confirms that it belongs in a Kilimanjaro bird guide.

However, the checklist does not establish regular sightings on individual climbing routes or at specific camps.

Do not claim that the bird is regularly seen on Marangu, Machame, Lemosho, Rongai or the Northern Circuit without verified local observations.

Von der Decken’s Hornbill is omnivorous, but much of its feeding activity is focused on animal prey.

Its diet includes:

• Grasshoppers and crickets
• Beetles and beetle larvae
• Mantids
• Cicadas
• Ants and termites
• Caterpillars and other insect larvae
• Snails
• Spiders and other invertebrates
• Small lizards
• Tree frogs
• Mice and other small mammals
• Occasionally young birds
• Fallen fruits, berries and seeds

It spends much of its feeding time on the ground, walking and running while searching for prey.

It also uses its bill to pick up insects and investigate loose soil, vegetation and other feeding opportunities.

Although it eats fruit and seeds, do not describe it as primarily a fruit-eating hornbill.

One particularly interesting aspect of Von der Decken’s Hornbill behaviour is its association with dwarf mongooses.

The two species may forage in the same areas. As mongooses move through the vegetation and disturb insects, hornbills can take advantage of the exposed prey.

The hornbills can also provide warning calls when potential predators approach.

This association is a fascinating example of how different African animals can benefit from one another while searching for food.

Do not claim that this behaviour occurs at a specific Kilimanjaro observation point without local evidence.

Von der Decken’s Hornbills are usually found in pairs or small family groups.

They are active during daylight and spend considerable time walking or running across the ground while searching for food.

They also perch in scattered trees and bushes, which provide resting places and opportunities to inspect the surrounding habitat.

The species is territorial and generally sedentary. Local movements may occur when environmental conditions and food availability change.

Von der Decken’s Hornbill produces a sequence of clucking notes, often described as repeated wuk-wuk-wuk sounds.

These calls are used for communication between individuals and may help maintain contact between members of a pair or family group.

Its vocalisations are relatively different from the deeper, more resonant calls of larger forest hornbills.

Von der Decken’s Hornbill uses natural cavities in trees for nesting.

During breeding, the female enters a suitable cavity and the entrance is gradually sealed using a mixture of mud, droppings and food material. A narrow opening remains through which the male provides food.

The female stays inside during much of the incubation and early chick-rearing period, while the male supplies food.

This nesting strategy provides protection for the female and developing chicks.

Do not publish an exact Kilimanjaro breeding calendar based on observations from another country or region.

Von der Decken’s Hornbill is classified as Least Concern on the IUCN Red List. The current IUCN assessment remains Least Concern, although the global population trend is reported as decreasing.

Its conservation depends partly on retaining suitable savanna and open woodland habitats, including mature trees that provide nesting cavities.

Do not interpret its global Least Concern classification as evidence that every local population is stable.

Kilimanjaro supports a varied bird community across its different habitats. Von der Decken’s Hornbill is one of the species included in the mountain's bird checklist.

Its unusual bill coloration, terrestrial feeding behaviour and association with open woodland make it an interesting species for birdwatchers.

African Majestic Adventure can help visitors discuss nature-focused experiences in northern Tanzania. Wildlife encounters depend on habitat, weather, season and observation conditions. No particular bird sighting should be guaranteed.