This species nests in such remote forested wetlands in southeastern Siberia that its nest was not discovered until 1974. Although locally abundant at the Izumi Crane Center, this species is classified as "vulnerable" by IUCN. Main threats are wetland loss especially on its wintering grounds in China and South Korea caused by reclamation projects and dam building which threatens an important wintering site. Also of concern is the artificially high concentration at Izumi which has a crane feeding program. Such high concentrations are thought to increase the chance of catastrophic loss in the event of a disease outbreak. Japan holds the largest wintering population by far with an estimate of c.10,500 individuals, over 90% of the world population, most at the Izumi feeding area. A Hooded Crane seen and photographed in Nebraska in 2011 was added to the official Nebraska bird list, but was not accepted by the American Birding Association's checklist because of questionable natural occurrence. Canon PowerShot SX60.
References:
Archibald, G.W., Meine, C.D., Kirwan, G.M. & Garcia, E.F.J. (2019). Hooded Crane (Grus monacha). 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/53561 on 29 April 2019).
BirdLife International 2016. Grus monacha. The IUCN Red List of Threatened Species 2016: e.T22692151A93337861. http://dx.doi.org/10.2305/IUCN.UK.2016-3.RLTS.T22692151A93337861.en. Downloaded on 29 April 2019.
Silcock, W.R., and J.G. Jorgensen. 2018. Hooded Crane (Grus monacha), Version 1.0. In Birds of Nebraska — Online. www.BirdsofNebraska.org