I've been reading Olson and Larson, Gulls of North America, Europe and Asia and looking at Bob's and Haans's photos. The flight photo looks like Greater Black-backed, right wing tip--the tip of P10 appears to be completely white consistent with GBBG with a white mirror (some black beyond white closer to tip) on P9 also consistent with GBBG. In comparison, Western Gull has a mirror on P10 with small white tip on P9. With regard to size, the smallest female GBBGs are Herring Gull size. Head & bill shape consistent with GBBG--agree with Jen B. The black color of back close to shade of primaries is consistent with GBBG and NOT wth Slaty-backed Gull adult plummage. I've seen one adult on Attu. Extent of white edging on tertials is more consistent with GBBG than with Slaty_backed & Western. Off course, pictures can be deceiving and I could be incorrect. It is almost 5 hours to Conneaut from Cincinnati. Trying to do my homework before jumping in my car and burning the fuel! Hope that Geoff Mallot's photos confirm these impressions! Jay Lehman, Cincinnati, sent from DROID ______________________________________________________________________ Ohio-birds mailing list, a service of the Ohio Ornithological Society. Our thanks to Miami University for hosting this mailing list. Additional discussions can be found in our forums, at www.ohiobirds.org/forum/. You can join or leave the list, or change your options, at: http://listserv.muohio.edu/scripts/wa.exe?LIST=OHIO-BIRDS Send questions or comments about the list to: [log in to unmask]