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Location Tanzania, Kagera
Central coordinates 31o 52.00' East  1o 40.00' South
IBA criteria A4i, A4iii
Area 48,000 ha
Altitude 1,134 m
Year of IBA assessment 2001

Site description The Bumbire islands are located 15 km off the western shore of Lake Victoria. They extend 28 km from north to south, beginning some 20 km south of Bukoba. The main island, Bumbire, lies between the smaller islands of Nyabura to the north and Iroba to the south; there are also numerous tiny islets. Bumbire is permanently inhabited, mainly by fishermen. Bumbire rises 120 m above the lake and still contains areas of large trees.

Key Biodiversity See Box for key species. The only data come from a partial survey in January 1995; figures given are therefore minima. Further counts may show that Phalacrocorax africanus and Egretta garzetta exceed the 1% thresholds. Bumbire has enough large trees to support a breeding colony of Phalacrocorax carbo on its northern tip. Another major colony lies on the western edge of Iroba island. In addition, two species of the Lake Victoria Basin biome have been recorded (see Table 3).

Non-bird biodiversity: None known to BirdLife International.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Great Cormorant Phalacrocorax carbo breeding  1995  18,880 breeding pairs  A4i  Least Concern 
A4iii Species group - seabirds breeding  1995  50,000-99,999 individuals  unknown  A4iii   


IUCN habitat Habitat detail Extent (% of site)
Wetlands (inland)   94%
Forest   5%

Land use

Land-use Extent (% of site)
fisheries/aquaculture -

References Baker (1997).

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Recommended citation  BirdLife International (2016) Important Bird and Biodiversity Area factsheet: Lake Victoria: Bumbire Islands. Downloaded from on 27/10/2016

To provide new information to update this factsheet or to correct any errors, please email BirdLife