Organochlorine pesticide use in agriculture and mosquito control caused declines in the 1950s and 1960s. Successful actions taken - From 1984 to 1994, an intensive management programme has significantly increased populations. Ongoing conservation programmes have been sponsored by the Peregrine Fund, National Parks and Conservation Service, Mauritian Wildlife Foundation and Durrell Wildlife Conservation Trust. Further actions needed - This species has undergone a spectacular recovery from just four birds in 1974. It is important to continue detailed population and ecological studies to ensure continuing appropriate management.
Tropical cyclones destroy nests and accelerate habitat degradation.
Disease and late winter food shortages are also threats. The Black River National Park covers much of its range. Ongoing conservation action has mainly been sponsored by the Mauritian Wildlife Foundation, Durrell Wildlife Conservation Trust and National Parks and Conservation Service. Further actions needed - This species has undergone a spectacular recovery from just ten wild birds in 1990, but further conservation is needed to maintain and increase numbers and continued research into population genetics and disease. Required actions include continuing rehabilitation of mainland native vegetation and extension of Conservation Management Areas and surrounding predator proof fences.