Ring-billed, Bonaparte's, Herring, California (adult center left preening...note slightly larger size,
darker gray upperparts and more prominent tertial crescent than Ring-billed; also heavy streaking on nape. This bird
appears slightly shorter-winged than is typical for California Gulls due to the outer 2 primaries still growing),
Lesser Black-backed (dark first-cycle bird on the far right), and Franklin's (small, first-cycle bird just
left of Lesser Black-backed Gull) gulls.