Yawri Bay

Country/territory: Sierra Leone

IBA Criteria met: A1, A4, B1a, B3a, B3b (2019)
For more information about IBA criteria please click here

Area: 33,605 ha

Conservation Society of Sierra Leone
Most recent IBA monitoring assessment
Year of assessment Threat score (pressure) Condition score (state) Action score (response)
2013 very high not assessed low
For more information about IBA monitoring please click here

Site description
This site is located on the southern side of the Western Area Peninsula, about 60 km south-east of Freetown. It is a shallow coastal wetland, with a 9,100 ha expanse of intertidal mudflats, that extends along 60 km of foreshore and is backed primarily by mangrove swamps covering 24,505 ha (14% of the total area of mangrove swamp in Sierra Leone), interlaced with a network of creeks. The bay’s topography and location mean that its waters are sheltered. It is therefore an important spawning ground for fish. This has led to the development of fishing communities and the establishment of commercial fisheries along its shores.

Key biodiversity
See Box for key species. Forty-six species have been recorded in the bay. The globally near-threatened Sterna balaenarum was recorded from Sierra Leone for the first time in 1994 from this site, when 40 were seen. This constituted a significant westward extension of its global range; whether the species occurs here regularly is unknown. The African Waterfowl Census in January 1995 covered 30% of the bay and recorded 13,168 waterbirds. Other areas of the bay were not accessible at that time because of poor security, but it is thought that waterbird numbers regularly exceed 20,000 in the bay as a whole.

Non-bird biodiversity: Among mammals, there are records of Trichechus senegalensis (VU) from the bay, and the duiker Cephalophus maxwelli (LR/nt) inhabits the coastal forest.

Recommended citation
BirdLife International (2023) Important Bird Areas factsheet: Yawri Bay. Downloaded from on 27/03/2023.