email a friend
printable version
Location Antarctica
Central coordinates 59o 54.95' West  63o 35.00' South
IBA criteria A4i
Area 500 ha
Year of IBA assessment 2015

Site description Pearl Rocks lie several km offshore from the western coast of Tower Island, ~25 km from the Davis Coast of the Antarctic Peninsula. Pearl Rocks are uncharted, so the IBA has been defined as an elliptical area centered on the approximate position of the northernmost of the three highest islets in the Pearl Rocks group.

Information on the environment at Pearl Rocks is not available. The nearest permanent scientific stations are Gabriel de Castilla (Spain) and Decepción (Argentina), located ~80 km to the northwest at Port Foster, Deception Island. These summer-only stations have a combined capacity of 90 people.

Key Biodiversity Around 170 breeding pairs of Imperial Shag were recorded in 1987 (Poncet & Poncet, unpublished data). No other birds are known to breed at this site.

Non-bird biodiversity: Several small colonies of Chinstrap Penguins (Pygoscelis Antarctica) are located on the coast of nearby Tower Island, where Southern Fulmar (Fulmaris glacialoides) and Cape Petrel (Daption capense) have also been recorded as breeding.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Imperial Shag Phalacrocorax atriceps breeding  1987  170 breeding pairs  poor  A4i  Least Concern 

Protection status None

Contribute  Please click here to help BirdLife conserve the world's birds - your data for this IBA and others are vital for helping protect the environment.

Recommended citation  BirdLife International (2016) Important Bird and Biodiversity Area factsheet: Pearl Rocks. Downloaded from on 28/10/2016

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