Sooty Shearwater (Ardenna grisea)
This shearwater is identifiable by its dark plumage, which is responsible for its name. It breeds at a small number of sites in the Islands, (including one of Falklands Conservation’s islands ), but further breeding colonies may certainly remain undiscovered.
Kidney Island is by far the largest known breeding colony with an estimated over 100,000 pairs. It feeds on fish and squid. Falklands breeders migrate to the North Atlantic in the austral winter.
It uses tussac habitat for its nesting burrows, rafting offshore in large numbers before returning to them at dusk. They lay one white egg in December, with chicks fledging in April.