This definitive-alternate Herring Gull Larus
a. smithsonianus was photographed by Martin Reid at
La Marque, Texas on 3rd April, 2000. It has obviously yellow legs
that on close inspection on the field were truly yellow but with
some pink blood vessels creating an irregular effect; in all other
respects it looked normal for a smithsonianus (e.g. pale
yellow eye and bright yellow orbital ring):
For comparison here are the legs of an adult LBBG at the same
site, the same day:
- and here is another bird standing just a few feet from
the above individual; it has one pink leg and one yellow/orange
one:
