This species is considered sacred to the Japanese people. It is said to be the heaviest crane weighing up to 25 lbs. It is also the second rarest crane (Whooping Crane is rarer) with a world population estimated at about 1,830 adults, half restricted to Hokkaido where they are mostly resident. Although the Japanese population is increasing slightly, the highly migratory mainland population continues to decline mostly because of conversion of wetlands for agriculture. The black "bustle" is not the tail, but elongated black secondaries (wing feathers). Canon PowerShot SX60 HS.
References:
Archibald, G.W., Meine, C.D. & Garcia, E.F.J. (2017). Red-crowned Crane (Grus japonensis). 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 http://www.hbw.com/node/53564 on 28 June 2017).
BirdLife International 2016. Grus japonensis. The IUCN Red List of Threatened Species 2016: e.T22692167A93339099. http://dx.doi.org/10.2305/IUCN.UK.2016-3.RLTS.T22692167A93339099.en. Downloaded on 22 May 2019.