They occur in lowland coastal wetlands on Oahu, Hawaii Island, Maui, Lanai, Molokai, Kauai and Niihau. These stilts are nonmigratory, except for seasonal movements between adjacent islands. It is named Big Oak Tree for a reason—the tree canopy averages 120 feet in height. The wetland was important foraging and nesting habitat for native Hawaiian waterbirds: the Ae`o or Black-necked Stilt, the `Alae Ke`oke`o or Hawaiian Coot, and the `Alae`ula or Common Moorhen. Today, fish crows and black vultures are common and black-necked stilt is a recent breeder in the Lowlands. pageTracker._trackPageview(); The best bird guide and bird watching search engine to identify A key factor in the growing populations appears to be the creation of new habitat suitable for the stilts. Ae'o numbers have risen slowly in the past 30 years, but there are still fewer than 2,000 individual breeding birds. elevation wetlands which are preferred by Hawaiian stilts (Henshaw 1902; van Rees and Reed 2014). The Hawaiian Stilt, or Ae'o (Himantopus mexicanus knudseni), is an endangered waterbird endemic to the Hawaiian Islands. document.write(""); var scJsHost = (("https:" == document.location.protocol) ? Both parents participate in nest construction, egg incubation, and rearing the chicks. Fish & Wildlife Service ECOS Environmental Conservation Online System var gaJsHost = (("https:" == document.location.protocol) ? The nesting season coincides with a seasonal decline in precipitation, which may alter habitat characteristics and thus impact depredation rates. As with the other Hawaiian waterbirds, historic numbers are unknown. Avocets and stilts are among the most slender and delicate looking birds. Oak and Prairie. Nest sites are frequently separated from feeding sites and stilts move between these areas daily. Fish and Wildlife Service, is a 704-acre natural wetland in Kihei, Maui. Ae‘o (Hawaiian stilt) prefers sites with a water depth of less than 24 centimeters (nine inches), limited and low growing vegetation, or exposed tidal flats. Aside from a population in Florida, this stilt and the American Avocet mostly occur in western North America. The Hawaiian stilt (Himantopus mexicanus knudseni) is an endangered Hawaiian subspecies of the black-necked stilt (H. mexicanus) species. Introduced species such as cats, rats, and mongooses have taken a toll on its population, and of course, much of the bird's habitat has been lost too. These wetland birds are endangered due to nesting habitat destruction from development and from predators. 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