tsheunglai

Dear Peter

I'll lay a heavy stake on your judgement that it is a Mongolicus. Look what pale legs it has! One key
feature is that it is pale-tipped on the outer primaries.

Other features that point towards a Mongolicus are that it has very pale gray scapulars with distinguishable anchor-like centres and tertials that contrast with rest of wing-coverts.

A Mongolicus also has a fairly large bill as I remember Mr G Carey's comment previously.

S L Tai