SERVICE, U. S. Fish and Wildlife. U.S. Fish and Wildlife Service announces final rule to remove the Hawaiian hawk from the list of threatened and endangered species. www.fws.gov [online]. [cit. 2022-01-06]. Dostupné online. (anglicky)
Mitchell, C, C Ogura, DW Meadows, A Kane, L Strommer, S Fretz, D Leonard & A McClung. HAWAII’S COMPREHENSIVE WILDLIFE CONSERVATION STRATEGY [online]. Honolulu: Department of Land and Natural Resources, October 1, 2005. Dostupné online.