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Location Guinea, Kindia
Central coordinates 15o 23.00' West  10o 38.00' North
IBA criteria A4i, A4ii
Area 1 ha
Altitude 0 - 12m
Year of IBA assessment 2001

Site description Ile Alcatraz (0.75 ha) is a lateritic rock islet on the continental shelf of the Atlantic Ocean, 40 km south-west of Iles Tristao (IBA GN004). The Ile de Naufrage (0.25 ha) is a sandbank 2 km south-west of Ile Alcatraz which is exposed even at high tide. Ile Alcatraz is unvegetated and covered with guano to a depth of about 3 m, which is the cause of its white appearance. The Ile de Naufrage is also unvegetated and reaches a maximum height of c.3 m above high water. The intertidal area is mainly sandy.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Brown Booby Sula leucogaster breeding  1988  3,000 breeding pairs  A4ii  Least Concern 
Royal Tern Thalasseus maximus winter  1988  3,000 individuals  A4i  Least Concern 

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Ile Alcatraz Wetlands of International Importance (Ramsar) 1 is identical to site 1  

Land use

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

Other biodiversity Among mammals, the dolphin Sousa teuszi (DD) and the sirenian Trichechus senegalensis (VU) are reported from the area; sea-turtles also occur.

References Altenburg and van der Kamp (1991a, b), Jones (1993).

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Recommended citation  BirdLife International (2014) Important Bird Areas factsheet: Ile Alcatraz et Ile du Naufrage. Downloaded from on 31/10/2014

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