Mugimaki Flycatcher

The mugimaki flycatcher, also called the robin flycatcher, is a small passerine of eastern Asia, named from the Japanese for 'wheat-sower'. It breeds in eastern Siberia and north-east China, and migrating birds pass through eastern China, Korea and Japan in spring and autumn, when they also appear in parks and gardens. (Wikipedia, general species account)

The adult male has blackish upperparts, a short white supercilium behind the eye, a white wing patch, an orange-red throat and breast, and a white belly. The female is grey-brown above with a pale orange-brown breast and throat. It has a rattling call and often flicks its wings and tail, and it usually occurs alone or in small groups, feeding on flying insects in the tree canopy. (Wikipedia, general species account)