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Message: <blockquote data-quote="SteveMM" data-source="post: 3526329" data-attributes="member: 130392">And a second bird taken on the same day as the flying individual above. I believe this to be mongolicus, too, but in many ways it is rather cryptic. Unlike the individual above, the wing coverts seem to be in very good condition and show no signs of wear. There is also a brown bar through the greater coverts, though this is diffuse and pale. However, on the rest of the wing, it is similar to the individual above, with a large window, a pale trailing edge to P1-4, and contrastingly brownish and faded primary coverts and outer primaries. It is difficult to tell on the flying bird just what is happening in the mantle and scapulars. They seem to have been replaced, but by feathers of a different type to those of the first individual.As I only found two mongolicus this particular day, I assume this second individual to be the bird standing in the final photo attached below (by extensively pink bill base). It is clearly mongolicus when the wing is all folded up. Attached: First-winter mongolicus (ID'd by predominantly whitish look throughout the wing coverts, white trailing edge P1-4 (and prominent window), older brownish-looking outer wing, and no evidence of feather replacement).</blockquote>