Cousin Island Special Reserve

IBA Criteria

Year of most recent IBA criteria assessment: 2001

Populations of IBA trigger species
Species Current IUCN Red List Category Season Year(s) of estimate Population estimate IBA Criteria Triggered
White-tailed Tropicbird Phaethon lepturus LC breeding 1999 860-1,540 breeding pairs A4ii
Wedge-tailed Shearwater Ardenna pacifica LC breeding - 9,250-16,900 breeding pairs A4ii
Lesser Noddy Anous tenuirostris LC breeding 1999 71,900-90,000 breeding pairs A4i
Common White Tern Gygis alba LC breeding 1997 1,860-4,080 breeding pairs A4i
Seychelles Warbler Acrocephalus sechellensis NT resident 1999 present A1, A2
Seychelles Magpie-robin Copsychus sechellarum EN resident 1999 present A1, A2
Seychelles Fody Foudia sechellarum NT resident 1999 present A1, A2
A4iii Species group - waterbirds n/a breeding - 100,000-499,999 individuals A4iii
A4iii Species group - seabirds n/a breeding - 20,000-49,999 individuals A4iii

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

IBA Protection

Protection status:

Protected Area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)
Cousin Island Special Reserve 2 protected area contained by site 2

Land use

Land-use Extent (% of site)
nature conservation and research -
tourism/recreation -
For further information about the land use classification please click here.

Recommended citation
BirdLife International (2020) Important Bird Areas factsheet: Cousin Island Special Reserve. Downloaded from on 29/05/2020.