Himalayan Black-lored Tit Machlolophus xanthogenys is very closely related to Yellow-cheeked Tit M. spilonotus. In China recorded only on Nepalese border with Tibet around Zhangmu (Shigatse Prefecture). Distinguished from Yellow-cheeked Tit by black lores and forehead, broader black stripe behind eye, more uniformly greenish upperparts, and brighter yellow underparts. — Craig Brelsford
THE TITS AND CHICKADEES OF CHINA
shanghaibirding.com covers every species in the family Paridae in China. Click any link:

Fire-capped Tit Cephalopyrus flammiceps
Yellow-browed Tit Sylviparus modestus
Sultan Tit Melanochlora sultanea
Azure Tit Cyanistes cyanus
Ground Tit Pseudopodoces humilis
Green-backed Tit Parus monticolus
Great Tit P. major
Cinereous Tit P. cinereus hainanus
Japanese Tit P. c. minor, P. c. tibetanus, P. c. commixtus
Himalayan Black-lored Tit Machlolophus xanthogenys
Yellow-cheeked Tit M. spilonotus
Yellow-bellied Tit Periparus venustulus
Coal Tit P. ater
Rufous-naped Tit P. rufonuchalis
Rufous-vented Tit P. rubidiventris
Grey-crested Tit Lophophanes dichrous
Varied Tit Sittiparus varius
White-browed Tit Poecile superciliosus
Pere David’s Tit P. davidi
Marsh Tit P. palustris
Black-bibbed Tit P. hypermelaenus
Sichuan Tit P. weigoldicus
Willow Tit P. montanus
See also these Taiwan endemics:
Chestnut-bellied Tit Sittiparus castaneoventris
Yellow Tit Machlolophus holsti
ACKNOWLEDGEMENTS
Daniel Bengtsson served as chief ornithological consultant for Craig Brelsford’s Photographic Field Guide to the Birds of China, from which this species description is drawn.
