Siberian blue robin,コルリ

It is widely inhabited in Asia and during summer it breeds in the northeastern part of the People's Republic of China, Japan, Russia's southeastern part, the Korean Peninsula.

In the winter, it winters over south of the People's Republic of China and south to Southeast Asia

In Japan, as a summer bird, It migrates to the north of central Honshu, Hokkaido for breeding. 
(Cited from the Japanese sentence of the Wikipedia)    

アジアに広く生息し、夏季に中華人民共和国北東部、日本、ロシア南東部、朝鮮半島で繁殖する。冬季になると中華人民共和国南部や東南アジアへ南下し越冬する。日本では繁殖のため北海道、本州中部以北に飛来する夏鳥。