Generally shy, we encountered a few flocks of these colorful finches. This is a male showing a black face and head where females are gray. Canon PowerShot SX60.
References:
Brazil, M. (2009). Birds of East Asia. Princeton Univ. Press.
Clement, P. & Arkhipov, V. (2019). Brambling (Fringilla montifringilla). 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/61288 on 16 April 2019).
Clement, P., A. Harris, and J. Davis. 1993. Finches and Sparrows: An Identification Guide. Princeton Univ. Press, Princeton, N. J.