The green-backed flycatcher (''Ficedula elisae'') 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

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 ...

, which contains the

Old World The "Old World" is a term for Afro-Eurasia that originated in Europe , after Europeans became aware of the existence of the Americas. It is used to contrast the continents of Africa, Europe, and Asia, which were previously thought of by the ...

flycatchers. It was long considered to a subspecies of the

narcissus flycatcher The narcissus flycatcher (''Ficedula narcissina'') is a passerine bird in the Old World flycatcher family. It is native to the East Palearctic, from Sakhalin to the north, through Japan across through Korea, mainland China, and Taiwan, winter ...

, but morphological and acoustical differences between the two indicate they are instead separate species. It breeds in northeastern

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 ...

and winters in southeast Asia. "''F. beijingnica''", proposed as a separate species called Beijing flycatcher or Peking flycatcher, is now considered by experts to be the first-summer male of this species and thus no longer a valid taxon.

References

green-backed flycatcher The green-backed flycatcher (''Ficedula elisae'') is a bird in the family Muscicapidae, which contains the Old World flycatchers. It was long considered to a subspecies of the narcissus flycatcher, but morphological and acoustical differences bet ...

Birds of China Birds of Manchuria

{{Muscicapidae-stub