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Location Réunion (to France), La Possession,St-Denis
Central coordinates 55o 23.00' East  20o 54.00' South
IBA criteria A1, A2
Area 825 ha
Altitude 0 - 800m
Year of IBA assessment 2001

Site description The site comprises a steep-sided valley in the dry, north-western lowlands between St-Denis and La Possession, together with the lowest part of the Ravine à Jacques, 1 km to the north-east. It contains a few habitations at the river mouths, a tourist centre and a military firing range, but around 40% of the site is protected, as it is one of the last sites on La Réunion where dry evergreen lowland forest survives. Other major habitats are secondary grassland and exotic thickets; small areas of cliff and rocky shore also occur.

Key Biodiversity See Box and Table 2 for key species. The site supports a high density of breeding Circus maillardi (5–10 pairs in 1997) and two of the largest known colonies of Collocalia francica (at least two large colonies totalling c.1,000 pairs in 1998) and all the other forest-living native birds of La Réunion except Coracina newtoni. Up to 100 pairs each of three seabird species (Puffinus pacificus, P. lherminieri and Phaethon lepturus) nest, but their populations are not globally significant.

Non-bird biodiversity: Dry evergreen lowland forest is the most threatened vegetation-type on the island, and supports many endemic plants.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Reunion Marsh-harrier Circus maillardi resident  1997  5-10 breeding pairs  A1  Endangered 
Mascarene Swiftlet Aerodramus francicus resident  1998  present  A1, A2  Near Threatened 
Mascarene Paradise-flycatcher Terpsiphone bourbonnensis resident  1998  present  A2  Least Concern 
Olivaceous Bulbul Hypsipetes borbonicus resident  1998  present  A2  Least Concern 
Mascarene Grey White-eye Zosterops borbonicus resident  1998  present  A2  Least Concern 
Reunion Olive White-eye Zosterops olivaceus resident  1998  present  A2  Least Concern 
Reunion Stonechat Saxicola tectes resident  1998  present  A2  Least Concern 

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Grande Chaloupe Littoral Conservation Area 258 protected area contained by site 258  
Pitons, cirques and remparts of Reunion Island World Heritage Site 105,838 protected area overlaps with site 14  

Land use

Land-use Extent (% of site)
military -
nature conservation and research -
tourism/recreation -

References Barré (1988), Barré et al. (1996), Cadet (1980), Cheke (1987b), Clouet (1978), Dupont et al. (1989), Ghestemme et al. (1998), Guillermet and Guillermet (1986).

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Recommended citation  BirdLife International (2016) Important Bird and Biodiversity Area factsheet: Ravine de la Grande Chaloupe. Downloaded from on 26/10/2016

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