It migrates as a summer bird to Japan and breeds central Honshu and to the north.
And it can be seen in central Honshu and to the south in the time of spring and autumn migration.
Quoted from Wikipedia's Japanese description
The English name of this bird English name on descriptions in Wikipedia is "Siberian Stonechat", but in other documents, it is described as ”Common Stonechat”, ”African Stonechat”.
It is now in the transition of winter feathers.(冬羽に移行中)