all photos of serie (clickable):
2020-01-13. Paul Holt:
It looks like a Black-headed Bunting too me too. Although extremely similar to Red-headed Bunting (& many are unidenifiable) the rather heavy bill, the heavily streaked forehead & crown, very slight rufous hue to some scapulars (no yellow-green visible) and only slight yellow tone on rump suggest that species. Differences in the length of primary projection, rump streaking and chin/throat colour described for these two species are likely unreliable.
2020-02-06. Андрей Баздырев:
Brown-headed Bunting (Emberiza bruniceps) 褐头鹀 : very contrasting stripes on the back and wings (in the black-headed, these stripes are blurry, unsharp).