| Location | South Sudan |
| Central coordinates | 32o 51.00' East 4o 6.00' North |
| IBA criteria | A1, A3 |
| Area | 103,200 ha |
| Altitude | 1,000 - 3,187m |
| Year of IBA assessment | 2001 |
Ornithological information See Box and Table 2 for key species. The wide altitudinal range and the site’s location at the meeting point of several biomes means that the Imatong mountains support a wide diversity of species. The site also includes the only known locality for Zoothera guttata maxis. One species of the Sahel biome (A03) has also been recorded (see Table 2).
Site description The Imatong Central Forest Reserve lies in the Imatong mountain range 190 km south-east of Juba on the Ugandan border. The mountains are sharply faulted and many perennial rivers arise within this upland region. The mountains are covered by a range of vegetation-types including Albizia–Terminalia woodland and mixed Khaya lowland semi-evergreen forest up to 1,000 m, and by Podocarpus and Croton–Macaranga–Albizia montane forest at 1,000–2,900 m. Above this, forest is replaced by Hagenia woodland, Erica thicket and areas of bamboo. Average annual rainfall is c.1,500 mm.
| Species | Season | Period | Population estimate | Quality of estimate | IBA Criteria | IUCN Category |
|---|---|---|---|---|---|---|
| Yellow-necked Spurfowl Francolinus leucoscepus | resident | 1999 | present [units unknown] | - | A3 | Least Concern |
| Fox Kestrel Falco alopex | resident | 1999 | present [units unknown] | - | A3 | Least Concern |
| Mountain Buzzard Buteo oreophilus | resident | 1999 | present [units unknown] | - | A3 | Least Concern |
| Arabian Bustard Ardeotis arabs | resident | 1999 | - | - | Near Threatened | |
| Buff-crested Bustard Eupodotis gindiana | resident | 1999 | present [units unknown] | - | A3 | Least Concern |
| Dusky Turtle-dove Streptopelia lugens | resident | 1999 | present [units unknown] | - | A3 | Least Concern |
| White-crested Turaco Tauraco leucolophus | resident | 1999 | present [units unknown] | - | A3 | Least Concern |
| White-bellied Go-away-bird Corythaixoides leucogaster | resident | 1999 | present [units unknown] | - | A3 | Least Concern |
| Montane Nightjar Caprimulgus poliocephalus | resident | 1999 | present [units unknown] | - | A3 | Least Concern |
| Star-spotted Nightjar Caprimulgus stellatus | resident | 1999 | present [units unknown] | - | A3 | Least Concern |
| Scarce Swift Schoutedenapus myoptilus | resident | 1999 | present [units unknown] | - | A3 | Least Concern |
| Red-throated Bee-eater Merops bulocki | resident | 1999 | present [units unknown] | - | A3 | Least Concern |
| Cinnamon-chested Bee-eater Merops oreobates | resident | 1999 | present [units unknown] | - | A3 | Least Concern |
| Abyssinian Scimitarbill Rhinopomastus minor | resident | 1999 | present [units unknown] | - | A3 | Least Concern |
| Jackson's Hornbill Tockus jacksoni | resident | 1999 | present [units unknown] | - | A3 | Least Concern |
| Black-breasted Barbet Lybius rolleti | resident | 1999 | present [units unknown] | - | A3 | Least Concern |
| Yellow-billed Barbet Trachyphonus purpuratus | resident | 1999 | present [units unknown] | - | A3 | Least Concern |
| Red-and-yellow Barbet Trachyphonus erythrocephalus | resident | 1999 | present [units unknown] | - | A3 | Least Concern |
| D'Arnaud's Barbet Trachyphonus darnaudii | resident | 1999 | present [units unknown] | - | A3 | Least Concern |
| Cassin's Honeyguide Prodotiscus insignis | resident | 1999 | present [units unknown] | - | A3 | Least Concern |
| Spotted Honeyguide Indicator maculatus | resident | 1999 | present [units unknown] | - | A3 | Least Concern |
| Brown-eared Woodpecker Campethera caroli | resident | 1999 | present [units unknown] | - | A3 | Least Concern |
| African Shrike-flycatcher Megabyas flammulatus | resident | 1999 | present [units unknown] | - | A3 | Least Concern |
| Chestnut Wattle-eye Platysteira castanea | resident | 1999 | present [units unknown] | - | A3 | Least Concern |
| Jameson's Wattle-eye Platysteira jamesoni | resident | 1999 | present [units unknown] | - | A3 | Least Concern |
| Grey Cuckooshrike Coracina caesia | resident | 1999 | present [units unknown] | - | A3 | Least Concern |
| Yellow-billed Shrike Corvinella corvina | resident | 1999 | present [units unknown] | - | A3 | Least Concern |
| Black-winged Oriole Oriolus nigripennis | resident | 1999 | present [units unknown] | - | A3 | Least Concern |
| Piapiac Ptilostomus afer | resident | 1999 | present [units unknown] | - | A3 | Least Concern |
| Dusky Tit Parus funereus | resident | 1999 | present [units unknown] | - | A3 | Least Concern |
| Mouse-coloured Penduline-tit Anthoscopus musculus | resident | 1999 | present [units unknown] | - | A3 | Least Concern |
| Red-winged Lark Mirafra hypermetra | resident | 1999 | present [units unknown] | - | A3 | Least Concern |
| Sun Lark Galerida modesta | resident | 1999 | present [units unknown] | - | A3 | Least Concern |
| Foxy Cisticola Cisticola troglodytes | resident | 1999 | present [units unknown] | - | A3 | Least Concern |
| Black-collared Apalis Oreolais pulchra | resident | 1999 | present [units unknown] | - | A3 | Least Concern |
| Plain Greenbul Andropadus curvirostris | resident | 1999 | present [units unknown] | - | A3 | Least Concern |
| Honeyguide Greenbul Baeopogon indicator | resident | 1999 | present [units unknown] | - | A3 | Least Concern |
| Joyful Greenbul Chlorocichla laetissima | resident | 1999 | present [units unknown] | - | A3 | Least Concern |
| Toro Olive Greenbul Phyllastrephus hypochloris | resident | 1999 | present [units unknown] | - | A3 | Least Concern |
| White-throated Greenbul Phyllastrephus albigularis | resident | 1999 | present [units unknown] | - | A3 | Least Concern |
| Common Bristlebill Bleda syndactylus | resident | 1999 | present [units unknown] | - | A3 | Least Concern |
| Yellow-spotted Nicator Nicator chloris | resident | 1999 | present [units unknown] | - | A3 | Least Concern |
| Bracken Warbler Bradypterus cinnamomeus | resident | 1999 | present [units unknown] | - | A3 | Least Concern |
| Mountain Flycatcher-warbler Chloropeta similis | resident | 1999 | present [units unknown] | - | A3 | Least Concern |
| Green Hylia Hylia prasina | resident | 1999 | present [units unknown] | - | A3 | Least Concern |
| Brown Woodland-warbler Phylloscopus umbrovirens | resident | 1999 | present [units unknown] | - | A3 | Least Concern |
| Senegal Eremomela Eremomela pusilla | resident | 1999 | present [units unknown] | - | A3 | Least Concern |
| Rufous-crowned Eremomela Eremomela badiceps | resident | 1999 | present [units unknown] | - | A3 | Least Concern |
| Green Crombec Sylvietta virens | resident | 1999 | present [units unknown] | - | A3 | Least Concern |
| Brown Warbler Sylvia lugens | resident | 1999 | present [units unknown] | - | A3 | Least Concern |
| Scaly-breasted Illadopsis Illadopsis albipectus | resident | 1999 | present [units unknown] | - | A3 | Least Concern |
| Brown Illadopsis Illadopsis fulvescens | resident | 1999 | present [units unknown] | - | A3 | Least Concern |
| African Hill Babbler Pseudoalcippe abyssinica | resident | 1999 | present [units unknown] | - | A3 | Least Concern |
| Rufous Chatterer Turdoides rubiginosa | resident | 1999 | present [units unknown] | - | A3 | Least Concern |
| Montane White-eye Zosterops poliogastrus | resident | 1999 | present [units unknown] | - | A3 | Least Concern |
| Purple Glossy-starling Lamprotornis purpureus | resident | 1999 | present [units unknown] | - | A3 | Least Concern |
| Bronze-tailed Glossy-starling Lamprotornis chalcurus | resident | 1999 | present [units unknown] | - | A3 | Least Concern |
| Sharpe's Starling Cinnyricinclus sharpii | resident | 1999 | present [units unknown] | - | A3 | Least Concern |
| Waller's Starling Onychognathus walleri | resident | 1999 | present [units unknown] | - | A3 | Least Concern |
| Stuhlmann's Starling Poeoptera stuhlmanni | resident | 1999 | present [units unknown] | - | A3 | Least Concern |
| Abyssinian Ground-thrush Zoothera piaggiae | resident | 1999 | present [units unknown] | - | A3 | Not Recognised |
| Spotted Ground-thrush Zoothera guttata | unknown | - | present [units unknown] | - | A1 | Endangered |
| White-starred Robin Pogonocichla stellata | resident | 1999 | present [units unknown] | - | A3 | Least Concern |
| Equatorial Akalat Sheppardia aequatorialis | resident | 1999 | present [units unknown] | - | A3 | Least Concern |
| Blue-shouldered Robin-chat Cossypha cyanocampter | resident | 1999 | present [units unknown] | - | A3 | Least Concern |
| White-fronted Black-chat Myrmecocichla albifrons | resident | 1999 | present [units unknown] | - | A3 | Least Concern |
| Little Rock-thrush Monticola rufocinereus | resident | 1999 | present [units unknown] | - | A3 | Least Concern |
| Kenya Violet-backed Sunbird Anthreptes orientalis | resident | 1999 | present [units unknown] | - | A3 | Least Concern |
| Green-throated Sunbird Nectarinia rubescens | resident | 1999 | present [units unknown] | - | A3 | Least Concern |
| Northern Double-collared Sunbird Nectarinia preussi | resident | 1999 | present [units unknown] | - | A3 | Least Concern |
| Tacazze Sunbird Nectarinia tacazze | resident | 1999 | present [units unknown] | - | A3 | Least Concern |
| Chestnut-crowned Sparrow-weaver Plocepasser superciliosus | resident | 1999 | present [units unknown] | - | A3 | Least Concern |
| Bush Petronia Petronia dentata | resident | 1999 | present [units unknown] | - | A3 | Least Concern |
| White-headed Buffalo-weaver Dinemellia dinemelli | resident | 1999 | present [units unknown] | - | A3 | Least Concern |
| Baglafecht Weaver Ploceus baglafecht | resident | 1999 | present [units unknown] | - | A3 | Least Concern |
| Black-billed Weaver Ploceus melanogaster | resident | 1999 | present [units unknown] | - | A3 | Least Concern |
| Cinnamon Weaver Ploceus badius | resident | 1999 | present [units unknown] | - | A3 | Least Concern |
| Brown-capped Weaver Ploceus insignis | resident | 1999 | present [units unknown] | - | A3 | Least Concern |
| Red-headed Malimbe Malimbus rubricollis | resident | 1999 | present [units unknown] | - | A3 | Least Concern |
| Abyssinian Crimson-wing Cryptospiza salvadorii | resident | 1999 | present [units unknown] | - | A3 | Least Concern |
| Dybowski's Twinspot Euschistospiza dybowskii | resident | 1999 | present [units unknown] | - | A3 | Least Concern |
| Black-bellied Firefinch Lagonosticta rara | resident | 1999 | present [units unknown] | - | A3 | Least Concern |
| Purple Grenadier Uraeginthus ianthinogaster | resident | 1999 | present [units unknown] | - | A3 | Least Concern |
| Swee Waxbill Estrilda melanotis | resident | 1999 | present [units unknown] | - | A3 | Least Concern |
| Grey-headed Silverbill Lonchura griseicapilla | resident | 1999 | present [units unknown] | - | A3 | Least Concern |
| Straw-tailed Whydah Vidua fischeri | resident | 1999 | present [units unknown] | - | A3 | Least Concern |
| Long-tailed Paradise-whydah Vidua interjecta | resident | 1999 | present [units unknown] | - | A3 | Least Concern |
| Streaky Seedeater Serinus striolatus | resident | 1999 | present [units unknown] | - | A3 | Not Recognised |
| Oriole Finch Linurgus olivaceus | resident | 1999 | present [units unknown] | - | A3 | Least Concern |
| Protected area | Designation | Area (ha) | Relationship with IBA | Overlap with IBA (ha) | |
|---|---|---|---|---|---|
| Imatong Central | Forest Reserve | 103,200 | is identical to site | 103,200 |
| IUCN habitat | Habitat detail | Extent (% of site) |
|---|---|---|
| Unknown | 1% | |
| Shrubland | 8% | |
| Savanna | 17% | |
| Forest | 72% |
| Land-use | Extent (% of site) |
|---|---|
| agriculture | - |
| nature conservation and research | - |
| water management | - |
Other biodiversity The site holds a number of endemic plant taxa.
Management considerations A part of the area has been proposed as National Park in which much of the remainder of the Forest Reserve would be designated as a buffer zone. The Imatong mountains are inhabited by the Lotuko and the Lango peoples in the east and by the Acholi in the west. Generally they live on the plains at the foot of the mountains, but they are increasingly being forced to move into the highlands, at up to 2,300 m, in search of agricultural land. Within the Forest Reserve boundary there are c.100 settlements with a population of c.35,000 people. Cultivation on steep slopes has led to serious problems of erosion, and hunting pressure at the higher altitudes has increased.
References Nikolaus (1989), Sommerlatte (1985), Wildlife Conservation and National Parks Forces (1991).
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Recommended citation BirdLife International (2013) Important Bird Areas factsheet: Imatong mountains. Downloaded from http://www.birdlife.org on 24/05/2013
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