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Location USA, Louisiana
Central coordinates 88o 56.04' West  29o 46.86' North
IBA criteria A4i
Area 145,444 ha
Altitude 0 - 2m
Year of IBA assessment 2012


Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Brown Pelican Pelecanus occidentalis breeding  2001-2006  430-1,642 breeding pairs  A4i  Least Concern 
Royal Tern Thalasseus maximus breeding  2006  1,900 individuals  unknown  A4i  Least Concern 
Sandwich Tern Thalasseus sandvicensis breeding  2006  3,700 individuals  unknown  A4i  Least Concern 

IBA Monitoring

2014 very high not assessed medium

Climate change and severe weather storms and floods happening now whole area/population (>90%) moderate to rapid deterioration very high
Energy production and mining oil and gas drilling happening now some of area/population (10-49%) slow but significant deterioration medium
Human intrusions and disturbance recreational activities happening now some of area/population (10-49%) slow but significant deterioration medium
Natural system modifications dams & water management/use - dams (size unknown) happening now whole area/population (>90%) very rapid to severe deterioration very high

Some of site covered (10-49%)  A comprehensive and appropriate management plan exists that aims to maintain or improve the populations of qualifying bird species  The conservation measures needed for the site are being comprehensively and effectively implemented  medium 

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Breton National Wildlife Refuge (FWS) 3,661 protected area contained by site 3,661  


IUCN habitat Habitat detail Extent (% of site)
Forest Mangrove  -

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Recommended citation  BirdLife International (2016) Important Bird and Biodiversity Area factsheet: Chandeleur Islands (Breton National Wildlife Refuge). Downloaded from on 25/10/2016

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