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The bird sounds like an Iceland Gull because it was smaller than nearby imm.
Herring Gull and large bill was not noted. (Yellow iris and white primaries
operate against Thayer's).

There are several jizz-type field marks that are not mentioned, however, and
I wonder what impression you had.

Glaucous looks chunky, partly because its primary projection is relatively
short. Bill looks relatively thick from top to bottom. Did this bird look
chunky and heavy-billed like a small Glaucous?

Iceland has a very rounded head, which is usually quite conspicuous. Bill
and body are proportionately slimmer than Glaucous.  How about this bird?

If you can get close enough, Glaucous has a yellowish orbital ring;
Iceland's is reddish or purplish.

Bob Fisher
Independence, Missouri
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----- Original Message -----
From: "Joshua Uffman" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Saturday, March 01, 2003 1:31 PM
Subject: White Headed Mystery Gull@ REDA


> For those interested in Gull Identification it may me
> a good time to head to REDA (Right now if possible).
> Many people this morning observed an adult White
> Headed, White Primary Gull at REDA.  This bird was
> first seen laying on the ice in Ellis Bay across from
> Heron Pond........Then the bird flew and was relocated
> on the Illinois side on the walls of the Melvin Price
> Lock and Dam (near visitors center)
> Notes on Bird:
> *Adult Bird (most leaning toward Glaucous or Iceland)
> *Light gray mantle
> *Bill about 1/2 length of head
> *Bird appeared short legged (compared to im. Herring
> Gull)
> *Clean (white) head, breast and neck
> *Primaries white
> *Yellow iris
> *Primary projection slightly shorter than length of
> bill
> *Slightly shorter than imm. Herring Gull
> *Bill did not seem dainty, yet did not seem very
> large, yellow bill with red spot on lower mandible
> More Notes and 9possibly) pictures from others I
> believe.
>
> Josh Uffman,
> St. Louis County
>
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*         Wild Bird Discussion Forum             *
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