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 lightweigh ...

in the family Cuculidae formerly thought to be conspecific with

Hodgson's hawk-cuckoo Hodgson's hawk-cuckoo (''Hierococcyx nisicolor''), also known as the whistling hawk-cuckoo is a species of cuckoo found in north-eastern India, Myanmar, southern China China, officially the People's Republic of China (PRC), is a country ...

(''Hierococcyx fugax'') and placed in the genus ''

Cuculus ''Cuculus'' is a genus of cuckoos which has representatives in most of the Old World, although the greatest diversity is in tropical southern and southeastern Asia. Taxonomy The genus ''Cuculus'' was introduced in 1758 by the Swedish naturalist ...

''.

Geographic Range

''Hierococcyx hyperythrus'' is found in eastern

China China, officially the People's Republic of China (PRC), is a country in East Asia. It is the world's most populous country, with a population exceeding 1.4 billion, slightly ahead of India. China spans the equivalent of five time zones and ...

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 (geometry), direction or geography. Etymology T ...

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 admini ...

,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 Japan ( ja, 日本, or , and formally , ''Nihonkoku'') is an island country in East Asia. It is situated in the northwest Pacific Ocean, and is bordered on the west by the Sea of Japan, while extending from the Sea of Okhotsk in the north ...

. Northern populations winter in

Borneo Borneo (; id, Kalimantan) is the 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, west of Sulawesi, and eas ...

References

rufous hawk-cuckoo The rufous hawk-cuckoo or northern hawk-cuckoo (''Hierococcyx hyperythrus'') is a bird in the family Cuculidae formerly thought to be conspecific with Hodgson's hawk-cuckoo (''Hierococcyx fugax'') and placed in the genus '' Cuculus''. Geographic ...

Birds of East Asia

{{Cuculiformes-stub