This adult-basic Herring Gull Larus a.
smithsonianus was photographed by Martin Reid at Victoria
Landfill, Texas on February 8, 2000. Note the long gray tongue
on the inner web of P10 (far wing), rather charcoal-toned underside
to P10 (in the field this was even more noticable), long P10 mirror
that is barely separated from the tip, and grayish tones to the
legs and feet (again more prominent in real life):
