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Ring-billed Gulls and two dark Lesser Black-backed Gulls, all tucked in, on frozen Lake Overholser
BD: would call gull behind L LBBG a HERG; other larger-than-RBGUs also present, could be HERG, THGU or CAGU; lack of white subscapular crescent suggests CAGU
All images copyrighted: © Steven P. Davis; all rights reserved.