Adult Steppe Gull (Larus (c.?) barabensis).
This individual is in the middle of the range:- black to P4 (which
has a large notch); gray inner-web tongue on P7 but not on P8;
medium-size P10 mirror well-separated from the tip; tiny P9 mirror;
limited black streaking on the outer primary coverts; on the underside,
P10 has a tiny gray tongue on inner web and P9 is more black than
it is gray:
