Young males are similar to the female but have a brighter orange breast, white in the tail and a more obvious supercilium.
Migrating birds pass through eastern China, Korea and Japan in spring and autumn.
The species winters in Southeast Asia, reaching western Indonesia and the Philippines.
[4] After a third review in 2016 the bird was placed in category E.[5] The main habitats are forest and woodland, particularly at higher elevations.
It usually occurs alone or in small groups, feeding on flying insects in the tree canopy.