[1] Bird Island is located 4.5 km off the south-western coast of West Falkland and is roughly triangular in shape.

The western half of the southern coast has sheer cliffs reaching at least 70 m and the plateau above slopes gently to the north and west.

The eastern promontory has two domed peaks reaching to at least 110 m with sheer southern cliffs of 30 m and very steep slopes in the north.

The congregation of seabirds on this island exceeds 10,000 breeding pairs, making the site classifiable under the A4iii criterion.

Endemic races present include the dark-faced ground-tyrant, Falkland thrush, long-tailed meadowlark and common diving petrel.