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Location Tanzania, Pwani
Central coordinates 38o 40.00' East  6o 10.00' South
IBA criteria A1, A2, A3
Area 20,000 ha
Altitude 100 - 300m
Year of IBA assessment 2001

Site description Zaraninge forest, at almost 20,000 ha, is the only forested area, among 10 actual or proposed Forest Reserves in Bagamoyo District, which has been investigated for birds. Within Zaraninge, a proposed reserve, the main area of interest is a relatively small (1,200 ha) patch of evergreen forest on the Kiono plateau in the western half of the proposed reserve within which six tree assemblages have been identified. The bulk of the site is rather open woodland with Terminalia, Diospyros, Albizia, Sterculia and Grewia. There is a seasonal marsh within Zaraninge. The eastern boundary of the forest is the Central Railway that runs due north along the edge of the coastal plain. Immediately to the east of the railway is the Sadaani Game Reserve that extends to the Indian Ocean, 15 km away.

Key Biodiversity See Box and Tables 2 and 3 for key species. The avifauna of Zaraninge was unknown until 1985. Hole-nesting species such as Campethera cailliautii, Apaloderma narina, Tockus alboterminatus and Poicephalus robustus are far more common than in similar forests elsewhere, perhaps because of the large number of dead trees. Anthreptes reichenowi yokanae is especially common as is Telophorus quadricolor, a thicket and forest-edge species, which indicates the openness of the habitat. Circaetus fasciolatus is a low-density resident. However, by far the most exciting discovery at this site has been records of Anthus sokokensis, perhaps the most enigmatic of the coastal forest birds in Tanzania. Because of logistical difficulties virtually no fieldwork has been undertaken during the long rains when species such as Pitta angolensis and the globally threatened Zoothera guttata could be expected to occur on passage. Ringing studies have indicated that nominally montane populations of Pogonocichla stellata winter in Zaraninge, where they undergo their annual moult.

Non-bird biodiversity: Mammals of global conservation concern include Loxodonta africana (EN), Rhynchocyon petersi (EN), Galago zanzibaricus (LR/nt) and Beamys hindei (VU) as well as rare bats. A shrew species is possibly endemic to the area. There are 17 forest-dependent reptiles, 10 amphibians and two possibly endemic plants.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Southern Banded Snake-eagle Circaetus fasciolatus resident  2000  present  A1, A3  Near Threatened 
Brown-headed Parrot Poicephalus cryptoxanthus resident  2000  present  A3  Least Concern 
Mombasa Woodpecker Campethera mombassica resident  2000  unknown  A3  Least Concern 
Chestnut-fronted Helmet-shrike Prionops scopifrons resident  2000  present  A3  Least Concern 
Four-coloured Bush-shrike Telophorus quadricolor resident  2000  present  A3  Least Concern 
Yellow Flycatcher Erythrocercus holochlorus resident  2000  present  A3  Least Concern 
Fischer's Greenbul Phyllastrephus fischeri resident  2000  present  A3  Least Concern 
Tiny Greenbul Phyllastrephus debilis resident  2000  present  A3  Least Concern 
Kretschmer's Longbill Macrosphenus kretschmeri resident  2000  present  A3  Least Concern 
Black-bellied Glossy-starling Lamprotornis corruscus resident  2000  present  A3  Least Concern 
Plain-backed Sunbird Anthreptes reichenowi resident  2000  present  A1, A3  Near Threatened 
Uluguru Violet-backed Sunbird Anthreptes neglectus resident  2000  present  A3  Least Concern 
Sokoke Pipit Anthus sokokensis resident  2000  present  A1, A2, A3  Endangered 
Eastern Green Tinkerbird Pogoniulus simplex resident  2000  present  A3  Least Concern 
Brown-breasted Barbet Pogonornis melanopterus resident  2000  unknown  A3  Least Concern 

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Kiono Zaraninge Forest Reserve 1,707,630 protected area contained by site 17,076  
Sadaani Game Reserve 0 protected area is adjacent to site 0  


IUCN habitat Habitat detail Extent (% of site)
Artificial - terrestrial   3%
Shrubland   3%
Forest   92%

Land use

Land-use Extent (% of site)
forestry -
nature conservation and research -

References Burgess and Clarke (2000), Burgess, Cutts et al. (1991), Clarke and Dickinson (1995), Faldborg et al. (1991), Mlingwa (1991), Mwasumbi et al. (1994).

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Recommended citation  BirdLife International (2016) Important Bird and Biodiversity Area factsheet: Bagamoyo District Coastal Forests. Downloaded from on 28/10/2016

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