Berezowski and Bianchi, 1891,
Mindzheuskago Okruga [= Mindscheu district, presumably Minhé Huizu, in Haidong Prefecture], upper Huang He (Yellow River), east Qinghai, China.
Until recently treated as conspecific with S. leucopsis, but separated on basis of significant morphological and vocal differences#R, involving much shorter, finer bill (allow 3); buffier white cheeks and throat grading through pale cinnamon on breast to pale rufous on belly vs clear greyish-white from cheek to belly (3); and “remarkable differences in territorial song”#R (allow at least 3); molecular analysis even places present species basal to all nuthatches, without close relatives (but leucopsis unsampled)#R. Monotypic.
C China in E & S Qinghai (Daban Shan S to Amdo Plateau and upper Huang He, and Nangqen area), W & SW Gansu (Huzu Bei Shan National Park, region SW of Xiahe and Minxian), N, C & W Sichuan (Songpan region, Qionglai Shan and around Litang) and extreme NE Xizang (NE of Qamdo). Also, separately recorded in SE Xizang (Kongbo, in Tsangpo Valley) and C Yunnan (Kunming), where status unknown#R.
Food and feeding
Status and conservation
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