Yellow-billed Stork Profile: The Pink-Tinged Wader of African Wetlands

Often seen in loose groups wading in shallows, it is one of the characteristic waterbirds of East Africa's lakes, rivers and floodplains. It feeds in an unusual way, sweeping its partly open bill through the water and snapping it shut when it touches prey.

This profile explains how to recognise the species, how it feeds and breeds, and where to look for it in Uganda, Kenya, Tanzania and Rwanda.

This guide is part of our animals of Uganda and East Africa guide. When you are ready to plan, see our Uganda safari packages or the Ameera Africa Safaris Uganda tours homepage.

Identification

An adult yellow-billed stork stands on long reddish legs, with mainly white plumage, a bare red face and a long, thick yellow bill that curves down at the tip. In flight, the black flight feathers and tail contrast sharply with the white body and wing coverts, creating a strong pattern. Breeding birds develop a rose-pink wash on the back and wing coverts, and the bill and face colours deepen. Juveniles are greyer with a dull bill and a feathered head. In flight storks hold the neck extended, unlike herons, which fold it back.

Habitat and Range

The species is found across sub-Saharan Africa and Madagascar, and it prefers shallow, open water with a good supply of small animals. Typical sites include lake margins, river sandbars, flooded grassland, pans, swamps and the edges of dams. It avoids dense forest and fast-flowing, deep water. In dry country it concentrates at remaining pools in the late dry season, and movements follow rainfall and flooding. Large numbers can gather where fish are trapped in drying waters, and it may roost in tall trees at night.

How It Feeds

Yellow-billed storks find food by touch. A bird wades forward with its bill held partly open in the water, sweeping it from side to side, and the bill snaps shut in a fraction of a second when it feels prey. Fish are the most important food, together with frogs, crustaceans, large insects and other small aquatic animals. Groups sometimes feed side by side, stirring up prey with their feet, and they may follow hippos or other animals that disturb mud and shallows. Sociable feeding makes them easy to watch from a boat.

Breeding and Colonies

Yellow-billed storks nest in colonies, often alongside herons, ibises, spoonbills and cormorants, building stick platforms in trees or reedbeds standing over water. Breeding is linked to rains and the availability of fish, and large colonies can be noisy and busy. Both parents incubate the eggs and feed the chicks, which beg loudly. Nests in trees above water protect the chicks from many predators, though large raptors and monitor lizards still take eggs and young. Colonies may move between years depending on water levels.

Where to See Yellow-billed Storks in East Africa

In Kenya, Lake Nakuru, Lake Baringo and the Mara River are reliable. In Tanzania, look at the Tarangire River pools and the Serengeti's wetlands. In Uganda, the Kazinga Channel in Queen Elizabeth National Park and the Victoria Nile in Murchison Falls offer fine views from boats, and Lake Mburo has them on the shoreline. In Rwanda, Akagera has good opportunities at the lake edges.

Viewing and Photography Tips

A boat gives the best angles, particularly at sunrise or late afternoon when the white plumage and pink tones glow. Photograph a feeding bird from the side to show the bill sweeping, and take flight shots against dark vegetation to bring out the black wings. Wait for synchronised movement in groups. Because white plumage can burn out, reduce exposure slightly. Keep your distance from nesting colonies, since disturbance can cause birds to abandon eggs. For more tips see safari photography tips.

Conservation and Related Species

The yellow-billed stork is widespread and not currently regarded as globally threatened, although it is vulnerable to loss of wetlands, pollution and disturbance at colonies. Compare it with the saddle-billed stork, marabou, goliath heron and hamerkop. The East Africa birding guide lists wetland sites across the region.

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