THE ENDANGERED HAWAIIAN HAWK: STATUS, BIOLOGY, AND PROPOSED RESEARCH Curtice R. Griffin School of Forestry, Fisheries and Wildlife ... History of endemic Hawaiian birds. It measures about 16-18 inches (40-46 cm) in length and has two color phases: a dark phase and a light phase (USFWS). Hawaiian Owl (Pueo) 100% Upvoted. 2003) and 1,600 (1,120 adults) to 2,700 birds (Hall et al 1997, Griffin et al. Fish and Wildlife Service is removing the ’io, or Hawaiian hawk (Buteo solitarius), from the endangered species list. The U.S. In the world of bird conservation, the condition of the Hawaiian hawk’s population is viewed as a rare exception. Part I. Near Threatened: now they are low risk. Fish and Wildlife Service found that the Hawaiian hawk population numbered 3,239 individuals in 1998 and 3,085 in 2007, which is not a significant difference. save. our status review of the Hawaii hawk, and the results are summarized below. report. INTERESTING FACTS The Hawaiian Hawk, or 'Io, is the only hawk native to Hawaii. “The Hawaiian hawk has retained a stable population over decades and there is much public support for protecting Hawaiian hawks for cultural reasons because it is widely recognized as an aumakua or familial guardian spirit in Hawaiian culture,” the agency said. Since 1916, Hawaii Volcanoes National Park's opening, the Hawaiian Hawk population has been suffering sustaining losses due to human harassment and being targets for shooting. If the population was found to be declining, it would warrant uplisting to a higher threat category. The feds say the hawk, once a symbol of royalty in Hawaiian legend, has maintained a stable population for more than 30 years and is no longer at risk of extinction. In 1967 the species's population was estimated at just a few hundred birds with a very limited range. Diet includes rodents and small birds. The population is well distributed in How many individuals are left in the wild? HAWAIIAN HAWK Buteo solitarius Other: 'Io monotypic native resident, endemic, endangered The Hawaiian Hawk is endemic to the Southeastern Hawaiian Islands, currently breeding only on Hawai’i I (AOU 1998, Clarkson and Laniawe 2000, Klavitter 2009). However, some argue that the Hawaiian Hawk has reached a sustainable population size and call for downlisting or even delisting it from the Endangered Species Act of 1973. Hawaiian hawk is one of many few extant species native to Hawaii. Flap-and-glide flight with some soaring. Only hawk species on Big Island, Hawaii. It has a black bill with yellow cere and pale yellow legs and feet. The Hawaiian Hawk was listed as endangered in 1967. Reason for Hope Forest birds: Hawa~ianHawk (.110). Given the hawk’s apparently stable population over this time period, it would also be reasonable to assume that the hawk’s population had … Hawaiian hawk, Io (EE-oh). 0 comments. “The Hawaiian hawk has retained a stable population over decades and there is much public support for protecting Hawaiian hawks for cultural reasons because it is widely recognized as an aumakua or familial guardian spirit in Hawaiian culture,” the agency said. We’ve also included a helpful link to where you’ll most likely be able to see these birds on the Big Island. Hawaii is home to a tremendous diversity of a wide array of birds. of Botany, university of Hawaii). Biologists have found the hawk’s population has remained stable for the past 30 years. What is the Hawaiian Hawk's conservation status? Hawaiian Hawk - nearly extinct, now back to a healthy population. share. data). When first listed as endangered in 1967, prior to the Endangered Species Act, only a few hundred individuals were believed to occupy areas with undisturbed, native habitat. Hawaiian hawk’s population has not change appreciably in the more than thirty years since the first study of the hawk was undertaken. Buteo solitarius breeds on Hawai`i in the Hawaiian Islands (USA), with vagrants recorded on Maui, O'ahu and Kaua'i.The population is thought to be fairly stable (J. Nelson in litt. From the striking Hawaiian hawk to the brilliant colors of the ‘Akekeke, these seven represent some of the most unique birdlife you’ll see in Hawaii or around the world! The Hawaiian Hawk currently holds a status of Near Threatened on the IUCN Red List due to the range and size of the population, but the steady population means that the bird does not have need for a more protected status at current. best. Population histories--species accounts. That population increase is a big part of the delisting push. In 1983, 435 km* were in sugarcane, 66 km2 were in diverse crops (primarily macadamia nuts, papaya and other fruit crops, and coffee), and 3,223 km2 were in pasture (Hawaii Department of Agriculture, Ho- nolulu, unpubl. Population estimates for Hawaiian Hawk range from 1,600 to 2,700 individuals. Criteria: B1ab(iii,v);C2a(ii) Click here for more information about the Red List categories and criteria Justification of Red List category This species is classified as Near Threatened because it has a very small population and a small range, for which there is currently no evidence of a decline. hide. When the Service published its Hawaiian hawk species recovery plan in 1984, researchers suggested that a population of 2,000 birds would be enough to consider downlisting the species from “endangered” to “threatened.” on the Hawaiian hawk (‘io, Buteo solitarius) for reconsideration of its current status (endangered), I tested survey methodology, determined population size, distribution, Locations originally sampled in 1998 were The Hawaiian hawk (Buteo solitarius) was originally listed as endangered in 1967, ... Studies have shown range-wide population estimates of the Hawaiian hawk have been stable for over 30 years. The Hawaiian Hawk became part of this 27% when it was added to the list of endangered species on February 24, 1967 (Udall 1967). While the Hawaiian hawk has soared in numbers over the last 40 years, its resilience is the exception for endangered native birds in Hawaii. Legal protection and more than 40 years of recovery efforts seem to have helped the Hawaiian hawk. 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