lpaul

I think this is baicalensis on the basis of the extent and shape of the throat patch, the grey (rather than black) rump and the apparent dark centres to all the median and greater coverts.

lpaul

I agree that the black lesser coverts are not good for baicalensis.  However the greater and median coverts are all adult (even though on the basis of the tertial moult I would have thought this is a first-winter bird) and these clearly are all dark centered which they should not be for leucopsis.  I can see that this is not a perfect fit for baicalensis, but equally I don't agree that this is a perfect fit for leucopsis.