Black-headed Heron

The black-headed heron (Ardea melanocephala) is a large, slender African heron, about 85–96 cm long with a wingspan of roughly 150–160 cm, making it similar in size to the grey heron (Ardea cinerea). Adults have a black crown and hindneck, white chin and throat and a mainly grey body, with long ornamental plumes on the neck and back. In flight, the pale underwings contrast strongly with the dark flight feathers. The bill is dark above and yellowish below, while the legs are black.

The sexes look alike. Juveniles are duller and browner around the head, neck and breast. The iris is normally yellow, but at the beginning of breeding it can turn a striking red before fading back toward yellow during incubation.

Black-headed herons are especially associated with open country, including natural grassland and savanna, wet meadows, damp pasture, farmland and clearings. They also use shallow marshes and the margins of rivers, ponds and lakes.

Unlike many large herons, the species is not strongly tied to standing water and may spend much of its feeding time far from wetlands. Irrigated fields, reservoirs, pasture and other human-created open habitats can provide useful feeding areas where prey is abundant.

Large insects such as grasshoppers and locusts can form a major part of the diet, particularly during wet periods. Earthworms, spiders, scorpions and other invertebrates are also taken.

The species readily shifts to larger vertebrate prey, including frogs, lizards, fish, small mammals and occasionally birds. This broad diet allows it to take advantage of temporary concentrations of prey in both grassland and wetlands.

The black-headed heron is unusually terrestrial for a large heron. It normally feeds alone, walking slowly through grass with deliberate high steps and watching the ground ahead. When prey is located, the bird may sway the neck from side to side before driving the bill forward in a rapid strike.

Feeding is not restricted to daylight; black-headed herons commonly hunt after dark as well. They are quick to exploit temporary concentrations of prey and may gather where rain, flooding, fire, mowing or insect outbreaks suddenly expose large numbers of animals.

Outside breeding colonies, black-headed herons are usually solitary or loosely spaced. They rest and roost in trees and can gather with other herons, but much of their active time is spent foraging independently across open ground.

Movement patterns vary strongly across Africa and often track rainfall and changing prey availability. Northern populations can make pronounced seasonal movements into areas that have recently become wet, while many birds in equatorial and southern Africa are more resident. Even resident populations may shift locally as grassland, flooding and prey availability change.

Breeding usually peaks during the rainy season, although timing differs among regions and nesting can occur throughout the year in some areas. Black-headed herons breed colonially and often nest alongside other waterbirds, sometimes in colonies containing hundreds of pairs. Courtship includes a characteristic stretch display in which the bird points its bill upward and puffs out the feathers of the chin and throat, accentuating the white throat.

Nests are most often loose platforms of twigs high in trees, although reedbeds and ground sites are also used. Both parents incubate and later brood or shade the chicks. Two or three pale blue-green eggs are typical, although clutches of two to six have been recorded.

Incubation lasts about 25 days. Young birds usually fledge after roughly 40–50 days and become independent at around 60 days.

The black-headed heron is classified as least concern on the IUCN Red List and remains widespread across sub-Saharan Africa.

A 2025 regional assessment for South Africa, Lesotho and Eswatini also classifies the species as least concern and gives a rough estimate of 30,000–150,000 mature individuals. The estimate is uncertain. Local trends vary, and the available data do not give a clear picture of change across the whole region.

Pasture creation, irrigation, dams and reservoirs have created additional feeding habitat in some areas. In contrast, loss of productive grassland and wetland degradation reduce feeding habitat, while disturbance can disrupt large nesting colonies.