Late this morning Chad Gustafson and I observed the following gulls at
Canal Park in Duluth:
-1 adult and 1 third-cycle Great Black-backed Gull
-1 adult and 1 first-cycle Glaucous Gull
-1 first-cycle Iceland Gull
-1 first-cycle gull that was either a dark Iceland or a light
Thayer's; this bird's tertials appeared finely patterned like an
Iceland but its bill seemed a bit larger and longer, suggesting a
Thayer's
-hundreds of Herring Gulls
Bob Dunlap
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