Southern Ground Hornbill

The Southern Ground Hornbill (Bucorvus leadbeateri), formerly known as Bucorvus cafer, is a remarkable bird, the largest in the hornbill order and found exclusively within Africa. This majestic creature, with a length ranging from 90 to 129 cm and a wingspan of 1.2 to 1.8 meters, is a sight to behold. The males, larger than the females, can weigh between 3.5 to 6.2 kilograms, while females range from 2.2 to 4.6 kilograms. They are predominantly black with striking red patches of bare skin on the face and throat, which serve to keep dust from their eyes while foraging. In flight, the white tips of their wings are distinctly visible. The beak is robust, black, and slightly curved, with a casque more pronounced in males. Females are identified by their violet-blue throat skin, while juveniles have a paler, greyish patch instead of the vibrant red.

Identification Tips

To identify the Southern Ground Hornbill, look for its large size, black plumage, and the vivid red or violet-blue skin on the throat. The male's throat is a pure red, while the female's is deep violet-blue. Juveniles can be recognized by their duller grey throat patch. In flight, the white primary feathers are a key distinguishing feature.

Habitat

The Southern Ground Hornbill is found in woodlands and savannas, requiring a habitat with large trees for nesting and short grass for foraging.

Distribution

This species ranges from Kenya to South Africa, with its presence also noted in northern Namibia and Angola to southern Zimbabwe and Burundi.

Behaviour

Living in groups of 5 to 10, these birds are apex predators and play a crucial ecological role. They forage on the ground, hunting a variety of prey from insects to small mammals. They are known for their loud, chorus-like calls that can be heard over great distances, serving as a means of maintaining their territory.

Song & Calls

The Southern Ground Hornbill's calls are a distinctive aspect of their behavior, used for communication and territorial purposes. These calls can be heard up to 3 kilometers away.

Breeding

Breeding pairs are assisted by at least two other birds, and experience as helpers is essential for successful rearing of young. They reach sexual maturity around 4-6 years of age and start breeding at about 10 years. Nesting typically occurs in high tree cavities or cliff face rock holes. They lay one to three eggs, but only one chick is usually reared to fledging.

Similar Species

The Abyssinian Ground Hornbill (B. abyssinicus) is similar but can be distinguished by its size and range.

Diet and Feeding

Southern Ground Hornbills are carnivorous, feeding on reptiles, frogs, snails, insects, and mammals up to the size of hares. They forage on the ground and rarely drink water.

Conservation status

The IUCN lists the Southern Ground Hornbill as Vulnerable globally, with an Endangered status in South Africa, Lesotho, Namibia, and Eswatini. Their numbers are declining due to habitat destruction, persecution, and other factors. Conservation efforts include habitat preservation and captive breeding programs.