The rufous hawk-cuckoo or northern hawk-cuckoo (''Hierococcyx hyperythrus'') is a

bird Birds are a group of warm-blooded vertebrates constituting the class Aves (), characterised by feathers, toothless beaked jaws, the laying of hard-shelled eggs, a high metabolic rate, a four-chambered heart, and a strong yet lightweig ...

in the family

Cuculidae Cuckoos are birds in the Cuculidae family, the sole taxon in the order Cuculiformes . The cuckoo family includes the common or European cuckoo, roadrunners, koels, malkohas, couas, coucals and anis. The coucals and anis are sometimes separ ...

formerly thought to be conspecific with Hodgson's hawk-cuckoo (''Hierococcyx fugax'') and placed in the genus '' Cuculus''.

Geographic Range

''Hierococcyx hyperythrus'' is found in eastern China,

North North is one of the four compass points or cardinal directions. It is the opposite of south and is perpendicular to east and west. ''North'' is a noun, adjective, or adverb indicating direction or geography. Etymology The word ''no ...

and

South Korea South Korea, officially the Republic of Korea (ROK), is a country in East Asia, constituting the southern part of the Korea, Korean Peninsula and sharing a Korean Demilitarized Zone, land border with North Korea. Its western border is formed ...

far eastern Russia The Russian Far East (russian: Дальний Восток России, r=Dal'niy Vostok Rossii, p=ˈdalʲnʲɪj vɐˈstok rɐˈsʲiɪ) is a region in Northeast Asia. It is the easternmost part of Russia and the Asian continent; and is adm ...

,There is no evidence of this species on

Sakhalin Sakhalin ( rus, Сахали́н, r=Sakhalín, p=səxɐˈlʲin; ja, 樺太 ''Karafuto''; zh, c=, p=Kùyèdǎo, s=库页岛, t=庫頁島; Manchu: ᠰᠠᡥᠠᠯᡳᠶᠠᠨ, ''Sahaliyan''; Orok: Бугата на̄, ''Bugata nā''; Nivkh: ...

island according to Russian sources: (''Гизенко А. И.'' Птицы Сахалинской области, М. Изд-во АН СССР, 1955. 324 с.; ''Судиловская А. М.'' 1951. Отряд Кукушки. // Птицы Советского Союза. Том 1, Под общ. ред. Г. П. Дементьева, Н. А. Гладкова. М.: Советская Наука. С. 46; ''Флинт В. Е., Бёме Р. Л., Костин Ю. В., Кузнецов А. А.'' Птицы СССР. М.: Мысль. 1968. С. 348-350.) and Japan. Northern populations winter in

Borneo Borneo (; id, Kalimantan) is the List of islands by area, third-largest island in the world and the largest in Asia. At the geographic centre of Maritime Southeast Asia, in relation to major Indonesian islands, it is located north of Java Isl ...

References

rufous hawk-cuckoo Birds of East Asia rufous hawk-cuckoo {{Cuculiformes-stub