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The site was identified as internationally important for bird conservation in 2001 because it was regularly supporting significant populations of the species listed below, meeting ('triggering') IBA criteria.

Populations meeting IBA criteria ('trigger species') at the site:

Species	Red List	Season (year/s of estimate)	Size	IBA criteria
Mascarene Swiftlet Aerodramus francicus	NT	resident (1998)	present	A1, A2
Mauritius Grey White-eye Zosterops mauritianus	LC	resident (1998)	present	A2

Ideally the conservation status of the IBA will have been checked regularly since the site was first identified in 2001. The most recent assessment (2023) is shown below.

State (condition of the trigger species' habitats)
Habitat	Quantity (% remaining)	Quality (% carrying capacity)	Result
Caves and Subterranean Habitats (non-aquatic)	poor (40–69%)	poor (40–69%)	very poor

Pressure (threats to the trigger species and/or their habitats)
Threat	Timing	Scope	Severity	Result
Human intrusions and disturbance	happe­ning now	whole of popul­ation/area (>90%)	rapid decline (>30% over 3 gener­ations)	very high
Natural system modifications	happe­ning now	most of popul­ation/area (50–90%)	rapid decline (>30% over 3 gener­ations)	very high

Response (conservation actions taken for the trigger species and/or their habitats)
Designation	Planning	Action	Result
Little/none of area covered (<10%)	No management planning has taken place	Very little or no conservation action taking place	very low

Habitat	% of IBA	Habitat detail
Caves and Subterranean Habitats (non-aquatic)	100

Land use	% of IBA
tourism/recreation	70
water management	70
other	minor (<10)
nature conservation and research	minor (<10)

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Pont Bon Dieu (Mauritius). Downloaded from https://datazone.birdlife.org/site/factsheet/pont-bon-dieu-iba-mauritius on 26/12/2024.