The purported Glaucous Gull reported from Mispillion Light in Delaware on
Sunday, was, in fact, a leucistic Great Black-backed Gull.  The folks who
bird there regularly have informed me that one has been frequenting that
spot for serveral years.  That would explain the adult bill on a bird that,
to me, had an immature mantle.  Standard issue gulls are tough enough,
without genetic sports!  Back to shorebirds and sparrows!!!!

Kurt Schwarz
Humbled in HowCo
goawaybird at comcast blah blah