| Invasion information | ||
| Range in Japan | Northern Kanto District to Chiba Pref. |
|
| Origin | Unknown. | |
| Date | The first record was in 1994 at Mt. Akagi in Gumma Pref. | |
| Route | Deliberate: Escape or release of pet. | |
| Impact | Potentialy: Competition against native species. Native organism(s) affected: Native birds in similar habitat, such as thrush and muscicapid birds. | |
| Regulation in Japan | Import, transport and keeping are prohibited in Japan by the Invasive Alien Species Act. | |
| Introduced range in other countries | No | |
| Reference | Notes |
|