St. Louis area. 12-9-08
Here a one legged adult Ring-billed gull:
Often time it would show a black-mark white feather
 aligned with/under the tertials:
What do you think? Can you correlate it with this flight pic?:
Is it P5?: I don't see any dark tertial marks.
Yes it is:
Here a first winter Ring-billed gull tail:
Here another: What's with the lone patterned outer tail feather?
R6 (outer-tail feather) is stacked atop it should be under.
Here some distant pics of a What the heck gull from Carlyle today:
The fine drizzled rain kept me from walking into McNair campground:
The extreme dark-hood made the face/bill outstanding:
Bill Rudden
St. Louis
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ASM Spring Meeting: May 1-3, 2009 in Columbia, MO.