DistributionRead full entry
Range DescriptionCircus macrosceles is confined to the Comoro Islands and Madagascar. It has not been seen recently on Mayotte (to France) (Safford 2001). The species has a broad distribution stretching c.1,000 km from north to south on Madagascar, but occurs at very low densities; surveys in 2005-2006 of 71 % of the potential harrier habitat on the island recorded a total of 80 individuals (RenÃ© de Roland et al. 2009). The population on Comoros (Grande Comore, Moheli and Anjouan: three separate subpopulations), where its habitat is nearly totally destroyed, is estimated at no more than 50 mature individuals (R. Thorstrom and L.-A. RenÃ© de Roland in litt. 2007). The total population is estimated to be somewhere in the range 250-500 mature individuals. The Bealanana and Ankozobe regions in Madagascar are particularly important for the species (RenÃ© de Roland et al. 2009). It is suspected to be declining, but population trends have not yet been accurately quantified.