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Location Tanzania, Mtwara
Central coordinates 40o 22.00' East  10o 25.00' South
IBA criteria A4i
Area 10,000 ha
Year of IBA assessment 2001

Site description Mnazi is a shallow bay just to the north of the Ruvuma river. It is protected on the seaward side by the Rawira peninsula to the south and by a series of small islands to the north.

Key Biodiversity See Box for key species. The site’s avifauna is poorly known. It is believed to be important for waterbirds, particularly waders. A count of 3,000 Dromas ardeola was recorded at the site in the 1960s, but a count in 1995 recorded only 750 birds. Seven species of the East African Coast biome have been recorded at the site (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
Crab-plover Dromas ardeola winter  1995  750 individuals  A4i  Least Concern 
Greater Sandplover Charadrius leschenaultii winter  1995  1,823 individuals  A4i  Least Concern 


IUCN habitat Habitat detail Extent (% of site)
Artificial - terrestrial   20%
Forest   80%

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: Mnazi Bay. Downloaded from on 22/10/2016

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