The Indochinese blue flycatcher (''Cyornis sumatrensis'') is a species of

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

Muscicapidae The Old World flycatchers are a large family, the Muscicapidae, of small passerine birds restricted to the Old World (Europe, Africa and Asia), with the exception of several vagrants and two species, Bluethroat (''Luscinia svecica)'' and Norther ...

. It is found from southern

Myanmar Myanmar, ; UK pronunciations: US pronunciations incl. . Note: Wikipedia's IPA conventions require indicating /r/ even in British English although only some British English speakers pronounce r at the end of syllables. As John C. Wells, Joh ...

and the

Malay Peninsula The Malay Peninsula (Malay: ''Semenanjung Tanah Melayu'') is a peninsula in Mainland Southeast Asia. The landmass runs approximately north–south, and at its terminus, it is the southernmost point of the Asian continental mainland. The area ...

Indochina Mainland Southeast Asia, also known as the Indochinese Peninsula or Indochina, is the continental portion of Southeast Asia. It lies east of the Indian subcontinent and south of Mainland China and is bordered by the Indian Ocean to the west an ...

and northeastern

Sumatra Sumatra is one of the Sunda Islands of western Indonesia. It is the largest island that is fully within Indonesian territory, as well as the sixth-largest island in the world at 473,481 km2 (182,812 mi.2), not including adjacent i ...

. It was previously considered conspecific with

Tickell's blue flycatcher Tickell's blue flycatcher (''Cyornis tickelliae'') is a small passerine bird in the flycatcher family. This is an insectivorous species which breeds in tropical Asia, from the Indian Subcontinent eastwards to Bangladesh and western Myanmar. The I ...

. The species shows regional variations in plumage and size and several of these populations have been designated with subspecies names. The population in Thailand and southern Myanmar is named as ''indochina''. Further south is the form ''sumatrensis'' (

Island,

) and ''lamprus'' on

Anamba Islands Anambas Islands Regency ( id, Kabupaten Kepulauan Anambas) is a small archipelago of Indonesia, located northeast of Batam Island in the North Natuna Sea between the Malaysian mainland to the west and the island of Borneo to the east. Geographi ...

. A species of feather mite ''Proterothrix cyornis'' has been described from an Indochinese blue flycatcher from Vietnam.

References

{{Taxonbar, from=Q31874522 Cyornis Birds of Indochina Birds described in 1879 Taxa named by Richard Bowdler Sharpe