Long-tailed Tit (Aegithalos caudatus) エナガ
The Long-tailed Tits in Hokkaido have white heads and fronts. This makes them very cute from the front in the snow with just the black eyes and tiny black beak showing. This one was by Onumako. Hokkaido 2012
Further South Long-tailed Tits have some black stipes on their heads and more colors on their back. They are not found South of Yakushima. Fujisawa 2015