Distribution
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Fulica alai is endemic to the Hawaiian Islands (USA), where it is found on all the main islands except Kaho`olawe14. Formerly, it was also absent from Lâna`i, which, along with Kaho`olawe, lacked suitable wetland habitat14. Stragglers reach as far west as Kure in the Northwestern Hawaiian Islands. It declined dramatically during the 20th century2, although it increased on O`ahu from the mid-1970s to the late 1980s. During this period, highly variable numbers on other islands showed no local trends12. Survey data from 1976 to 2003 reveal short-term population fluctuations, with a long-term slight increase in the overall population14. The current population probably fluctuates between 2,000 and 4,000 individuals, with Kaua`i, O`ahu and Maui supporting 80% of this total5,10,14. Some 30 colonies or concentrations are known1,6.
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