Thayer's Gull (thayeri)
(last update: January 22, 2013)
Thayer's Gull 1st cycle (2CY), February 16 2010, Winthrop Harbor, IL. Picture: Erik Bruhnke.
Visit: Erik's Pbase photostream.
Note pale windows on inner primaries which continue to the inner webs of the outer primaries. Also note the lack of dark pigmentation on the inner web tips of P1-P4, with just a bit of faint darker on P4.
