Sometimes called the "Black Wood Pigeon," this largest of the Japanese pigeons is locally distributed on small islands off Japan. It prefers mature forest where it is uncommon and declining. This species is listed as "near threatened" by IUCN citing declines caused by logging and hunting. This is the nominate race with reduced pinkish gloss on its head. Canon PowerShot SX60 HS.
Reference:
Baptista, L.F., Trail, P.W., Horblit, H.M., de Juana, E., Sharpe, C.J. & Boesman, P. (2019). Japanese Woodpigeon (Columba janthina). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved from https://www.hbw.com/node/54122 on 4 October 2019).
BirdLife International 2016. Columba janthina. The IUCN Red List of Threatened Species 2016: e.T22690206A93265097. http://dx.doi.org/10.2305/IUCN.UK.2016-3.RLTS.T22690206A93265097.en. Downloaded on 15 October 2019.