The site was identified as internationally important for bird conservation in 1998 because it was regularly supporting significant populations of the species listed below, meeting ('triggering') IBA criteria.
Species |
Red List |
Season (year/s of estimate) |
Size |
IBA criteria |
King Penguin Aptenodytes patagonicus |
LC |
breeding (-) |
220,000 pairs |
A4ii |
King Penguin Aptenodytes patagonicus |
LC |
non-breeding (-) |
512,000 birds |
A4ii |
Macaroni Penguin Eudyptes chrysolophus |
VU |
breeding (-) |
417,000 pairs |
A1, A4ii |
Macaroni Penguin Eudyptes chrysolophus |
VU |
non-breeding (-) |
990,000 birds |
A1, A4ii |
Southern Rockhopper Penguin Eudyptes chrysocome |
VU |
breeding (-) |
208,000 pairs |
A1, A4ii |
Southern Rockhopper Penguin Eudyptes chrysocome |
VU |
non-breeding (-) |
490,000 birds |
A1, A4ii |
Black-bellied Storm-petrel Fregetta tropica |
LC |
breeding (-) |
2,000 pairs |
A4ii |
Black-bellied Storm-petrel Fregetta tropica |
LC |
non-breeding (-) |
2,000 birds |
A4ii |
Snowy Albatross Diomedea exulans |
VU |
breeding (-) |
3,000 pairs |
A1, A4ii |
Snowy Albatross Diomedea exulans |
VU |
non-breeding (-) |
8,200 birds |
A1, A4ii |
Indian Yellow-nosed Albatross Thalassarche carteri |
EN |
breeding (-) |
7,000 pairs |
A1, A4ii |
Indian Yellow-nosed Albatross Thalassarche carteri |
EN |
non-breeding (-) |
20,000 birds |
A1, A4ii |
Sooty Albatross Phoebetria fusca |
EN |
breeding (-) |
2,400 pairs |
A1, A4ii |
Sooty Albatross Phoebetria fusca |
EN |
non-breeding (-) |
5,500 birds |
A1, A4ii |
Grey-headed Albatross Thalassarche chrysostoma |
EN |
breeding (-) |
8,100 pairs |
A1, A4ii |
Grey-headed Albatross Thalassarche chrysostoma |
EN |
non-breeding (-) |
19,000 birds |
A1, A4ii |
Northern Giant Petrel Macronectes halli |
LC |
breeding (-) |
590 pairs |
A1, A4ii |
Northern Giant Petrel Macronectes halli |
LC |
non-breeding (-) |
1,400 birds |
A1, A4ii |
Southern Giant Petrel Macronectes giganteus |
LC |
breeding (-) |
3,310 pairs |
A1, A4ii |
Southern Giant Petrel Macronectes giganteus |
LC |
non-breeding (-) |
8,000 birds |
A1, A4ii |
Blue Petrel Halobaena caerulea |
LC |
breeding (-) |
200,000 pairs |
A4ii |
Blue Petrel Halobaena caerulea |
LC |
non-breeding (-) |
200,000 birds |
A4ii |
MacGillivray's Prion Pachyptila macgillivrayi |
CR |
breeding (-) |
200,000 pairs |
A4ii |
MacGillivray's Prion Pachyptila macgillivrayi |
CR |
non-breeding (-) |
200,000 birds |
A4ii |
Kerguelen Petrel Aphrodroma brevirostris |
LC |
breeding (-) |
20,000 pairs |
A4ii |
Kerguelen Petrel Aphrodroma brevirostris |
LC |
non-breeding (-) |
20,000 birds |
A4ii |
Soft-plumaged Petrel Pterodroma mollis |
LC |
breeding (-) |
2,000 pairs |
A4ii |
Soft-plumaged Petrel Pterodroma mollis |
LC |
non-breeding (-) |
2,000 birds |
A4ii |
Great-winged Petrel Pterodroma macroptera |
LC |
breeding (-) |
20,000 pairs |
A4ii |
Great-winged Petrel Pterodroma macroptera |
LC |
non-breeding (-) |
20,000 birds |
A4ii |
Grey Petrel Procellaria cinerea |
NT |
breeding (-) |
2,000 pairs |
A1, A4ii |
Grey Petrel Procellaria cinerea |
NT |
non-breeding (-) |
2,000 birds |
A1, A4ii |
White-chinned Petrel Procellaria aequinoctialis |
VU |
breeding (-) |
20,000 pairs |
A1, A4ii |
White-chinned Petrel Procellaria aequinoctialis |
VU |
non-breeding (-) |
20,000 birds |
A1, A4ii |
Imperial Shag Leucocarbo atriceps |
LC |
resident (-) |
463–961 pairs |
A4i |
Imperial Shag Leucocarbo atriceps |
LC |
non-breeding (-) |
1,050–2,050 birds |
A4i |
Black-faced Sheathbill Chionis minor |
LC |
resident (-) |
3,270 pairs |
A4ii |
Black-faced Sheathbill Chionis minor |
LC |
non-breeding (-) |
7,000 birds |
A4ii |
Kelp Gull Larus dominicanus |
LC |
breeding (-) |
230 pairs |
A4i |
Kelp Gull Larus dominicanus |
LC |
non-breeding (-) |
480 birds |
A4i |
Antarctic Tern Sterna vittata |
LC |
breeding (-) |
50 pairs |
A4i |
Antarctic Tern Sterna vittata |
LC |
non-breeding (-) |
120 birds |
A4i |
Kerguelen Tern Sterna virgata |
NT |
breeding (-) |
35 pairs |
A1, A4i |
Kerguelen Tern Sterna virgata |
NT |
non-breeding (-) |
90 birds |
A1, A4i |
Brown Skua Catharacta antarctica |
LC |
breeding (-) |
960 pairs |
A4ii |
Brown Skua Catharacta antarctica |
LC |
non-breeding (-) |
2,150 birds |
A4ii |
A4iii Species group - seabirds |
n/a |
breeding (-) |
2,500,000-4,999,999 birds |
A4iii |
A4iii Species group - seabirds |
n/a |
non-breeding (-) |
2,500,000-4,999,999 birds |
A4iii |