This species is endemic to the Himalayas. It was formerly lumped with the White-eared Bulbul (Pycnonotus leucotis) under the name White-cheeked Bulbul. The two are similar but the latter has a less prominent crest and larger white cheek patch. White-eared replaces Himalayan in the lowlands of NW India and across Pakistan to parts of the Middle East. The two are said to hybridize freely in the Punjab region but the hybrid zone is reportedly small. Canon PowerShot SX50 HS..
References:
Fishpool, L. & Tobias, J. (2016). Himalayan Bulbul (Pycnonotus leucogenys). 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/57944 on 6 October 2016).
Rasmussen, P.C. & Anderton, J.C. (2012) Birds of South Asia. The Ripley Guide. Vols. 1 and 2. Second Edition. Smithsonian Institution. Michigan State University & Lynx Edicions, Washington. D.C., Michigan & Barcelona.