> Christopher Hill wrote:
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"Since it is not fully adult, though, it lacks white in the primaries,
and I'm not sure how to evaluate the bird further. Could just be an
unusual Western/Glaucous-wing hybrid, perhaps (or, as Steve suggested,
it could also be a Slatyback-Glaucous-wing hybrid)."

For what it is worth (perhaps not much), the third-winter Slaty-backed
Gull which visited the Brownsville dump in south Texas a few years ago
(Dec - Feb) had much of the classic primary pattern - found on adult
birds - intact.

Carl Haynie
Issaquah, WA
chaynie at gte.net

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