IBA Criteria

Year of most recent IBA criteria assessment: 2007

Populations of IBA trigger species
Species Current IUCN Red List Category Season Year(s) of estimate Population estimate IBA Criteria Triggered
Magnificent Frigatebird Fregata magnificens LC resident 2007 500 individuals B4ii
Red-footed Booby Sula sula LC breeding 2001 300 individuals B4ii
Brown Booby Sula leucogaster LC breeding 2007 300 individuals B4ii
Masked Booby Sula dactylatra LC breeding 2007 170 individuals B4ii

Note: This table presents the IBA criteria triggered and the species that triggered then at the time of assessment, the current IUCN Red List category may vary from that which was in place at that time.

For more information about the IBA assessment process and criteria please click here


IUCN Habitat Habitat detail Extent (% of site)
Rocky areas (eg. inland cliffs, mountain peaks) -
Sea -
Shrubland Scrub -
For further information about the habitat classification please click here.

Land use

Land-use Extent (% of site)
not utilised -
For further information about the land use classification please click here.

Recommended citation
BirdLife International (2022) Important Bird Areas factsheet: Redonda. Downloaded from on 17/05/2022.