Elephant bird birds and human beings and their eventual extinction, as they apparently coexisted for a massive period of time. However, the absence so far for any evidence of human habitation in the succeeding 6000 years raises difficult questions concerning whether the early human presence might have been temporary, and/or restricted to just a portion of the island. Elephant bird Elephant birds are members of the extinct ratite family Aepyornithidae, made up of large to enormous flightless birds that once lived on the island of Madagascar. They became extinct, perhaps around 1000–1200 CE, for reasons that are unclear, although human activity is
Bleaker Island by stands of tussac grass. The island is home to a wide variety of wildlife including southern sea lions with some visiting southern elephant seals. Norway rats were accidentally introduced to the island in the 1980s. They have now spread throughout the island and onto First, Second and Third Islands. Overgrazing was a problem but reduced grazing pressure is helping the slow regeneration of tussac and native flowering plants. The Bleaker Island group has been identified by BirdLife International as an Important Bird Area. A survey identified 49 bird species on the islands, 37 of which were confirmed as breeding