Sites - Important Bird Areas (IBAs)

Ornithological information See Box and Table 3 for key species. The area is famous for its population of Balaeniceps rex, an uncommon resident which, for much of the year, is loosely concentrated near the main river channels, although during flood periods there is much dispersal. Grus carunculatus is a common breeding resident, often present in large numbers, Egretta vinaceigula is a scarce resident or visitor which possibly breeds, while Gallinago media is a common wintering visitor. The three Palearctic Circus species are all regular, with C. pygargus the most numerous, followed by C. macrourus; least common is C. aeruginosus. Falco naumanni occurs in some numbers, Phoenicopterus minor is a vagrant. The basin as a whole may represent one of the last strongholds of the Afrotropical subspecies Botaurus stellaris capensis, in view of its drastic decline in southern Africa (Allan in Harrison et al. 1997). Neotis denhami is common on the flood-plain and during passage periods is found alongside large numbers of Ciconia abdimii and C. ciconia. Some of the largest concentrations of herons (Ardeidae), storks (Ciconiidae) and wildfowl (Anatidae) occur as the flood-waters recede and at this time large numbers of waterbirds are also breeding within the swamp. Egretta vinaceigula is a scarce resident or visitor which possibly breeds, while Gallinago media is a common non-breeding visitor. The three Palearctic Circus species are all regular, with C. pygargus the most numerous, followed by C. macrourus and least common is C. aeruginosus. The permanent swamps must hold enormous numbers of rails (Rallidae), but no censusing has been carried out. Common swamp passerines include Acrocephalus rufescens, Cisticola pipiens, Muscicapa aquatica and Ploceus katangae (small range in Zambia). Merops variegatus is distributed throughout the area and the plains hold an isolated population of Cisticola aridulus alongside the rather localized Euplectes progne. Phoenicopterus minor is a vagrant.

Site description A vast area of swamp, flood-plain and termitaria encompassing about 40% of the total wetland area in the Bangweulu basin. The site includes Chikuni Game Management Area, a designated Ramsar Site (250,000 ha), and some adjacent areas to the north and west. It lies on the southern side of the basin and reaches the Serenje–Samfya road to the south-west. In areas of permanent swamp the vegetation is dominated by Cyperus, Phragmites, Typha, Limnophyton and Thalia species, and in the flooded grassland dominant genera include Acroceras, Leersia, Sacciolepsis and Setaria. During flood periods, thick mats of aquatic vegetation may form ‘floating meadows’. The extent and timing of the annual flood depends on rainfall, but water-levels usually begin to rise in January and reach their peak in March. From April onwards the water recedes and the flood-plain tends to be dry by late May, although in wetter years pools may persist until August. The area holds considerable numbers of large mammals, and tourists and licensed hunters may stay at one of several camps on the south-eastern side. Many small-scale fishermen inhabit islands and other surrounding areas.

Populations of IBA trigger species

Protected areas

Protected area	Designation	Area (ha)	Relationship with IBA	Overlap with IBA (ha)
Bangweulu	Game Management Area	657,000	protected area contained by site	657,000
Bangweulu Swamps: Chikuni	Wetlands of International Importance (Ramsar)	1,100,000	protected area contained by site	1,100,000
Chambeshi	Game Management Area	62,000	protected area contained by site	62,000
Isangano	National Park	84,000	protected area contained by site	84,000
Kafinda	Game Management Area	386,000	protected area is adjacent to site	0
Kalaso Mukoso	Game Management Area	67,500	protected area overlaps with site	0
Lavushi Manda	National Park	150,000	protected area is adjacent to site	0
Luwingu	Game Management Area	109,000	protected area is adjacent to site	0
Mulembo	Forest Reserve	19,395	protected area is adjacent to site	0

Habitats

Land use

Other biodiversity A wide variety of mammals occur, including Tragelaphus spekii (LR/nt) and the endemic subspecies Kobus leche smithemani. Reptiles include Crocodylus cataphractus (DD).

Management considerations The swamps support a large human population and general disturbance is a continual threat to sensitive species such as Balaeniceps rex. Furthermore, nests of this species are raided or even actively destroyed if discovered and it would appear that small numbers of birds are still being caught for illegal live export. Large breeding colonies may suffer the same fate if found and small numbers of birds are hunted under licence. Fires are widespread in the dry season and may thwart the breeding attempts of some species.

References Buxton et al. (1978), Christian (1997), Howard and Aspinwall (1984), Mwenya (1973), Renson (1998).

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Recommended citation  BirdLife International (2013) Important Bird Areas factsheet: Bangweulu Swamps. Downloaded from http://www.birdlife.org on 24/05/2013

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