2 presumed Mongolian
Gulls? on the same date.
But not I could not
observe them enough,
A sleeping bird on the
left is the bird.
The wing-molt was finished.
Its
new
P10is seen in
the underside of the far wing. This molt was exceptionally
early among the large flock.
2 new primaries are seen
here. It would be a relatively later example for mongolicus.
But other points look suitable for mongolicus.