The site was identified as internationally important for bird conservation in 2006 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 |
Ruddy-headed Goose Chloephaga rubidiceps |
LC |
breeding (2005) |
3 pairs |
A2 |
Falkland Steamerduck Tachyeres brachypterus |
LC |
breeding (2005) |
abundant |
A2 |
Gentoo Penguin Pygoscelis papua |
LC |
breeding (2005) |
6,648 pairs |
A1, A4ii |
Southern Rockhopper Penguin Eudyptes chrysocome |
VU |
breeding (2005) |
13,450 pairs |
A1 |
Magellanic Penguin Spheniscus magellanicus |
LC |
breeding (2005) |
2,500-9,999 pairs |
A1 |
Black-browed Albatross Thalassarche melanophris |
LC |
breeding (2005) |
29,000 pairs |
A1, A4ii |
Slender-billed Prion Pachyptila belcheri |
LC |
breeding (2005) |
2,500,000-4,999,999 pairs |
A4ii |
White-chinned Petrel Procellaria aequinoctialis |
VU |
breeding (2005) |
< 50 pairs |
A1 |
Imperial Shag Leucocarbo atriceps |
LC |
breeding (2005) |
2,500-9,999 pairs |
A4i |
Striated Caracara Phalcoboenus australis |
NT |
breeding (2005) |
< 50 pairs |
A1, A2 |
Blackish Cinclodes Cinclodes antarcticus |
NT |
breeding (2005) |
10 pairs |
A2 |
Cobb's Wren Troglodytes cobbi |
LC |
breeding (2005) |
present |
A1, A2 |
White-bridled Finch Melanodera melanodera |
LC |
breeding (1999) |
present |
A2 |
A4iii Species group - seabirds |
n/a |
breeding (2005) |
1,000,000-2,499,999 pairs |
A4iii |