The document summarizes information about the endangered Black Robin bird population. It discusses that in 1980 there were only 5 Black Robins left in the world, but the population has since grown to around 250 birds on two islands. However, the population is threatened by similar genetics making them vulnerable to disease, as well as lack of space and resources on the small islands. The document provides details on the birds' habitat, diet, breeding habits, and conservation efforts underway to help protect the species.