Ryukyu Robin (Larvivora komadori) アカヒゲ
A male Ryukyu Robin in the forest. Amami 2023
Komadori コマドリ is the common name for the Japanese Robin (Larvivora akahige) which is a different bird. Akahige is the Japanese common name for the Ryukyu Robin. If that seems backwards to you, welcome to the world of scientific naming.
A female Ryukyu Robin next to my house. Amami 2023