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adult winter Lesser Black-backed Gull graellsii

Fig 1) Note the rather well-defined head-streaking. Photo by Don DesJardin. Copyright 1997.

Fig 2) P10 is only half grown and P9 is not complete yet, giving the bird a stubby, rather than long-winged look with only two white tips showing past the tertials. That's a California Gull on the left. November 15, 1998. Alviso Marina, CA. Photo by Mike Rogers. Copyright 1998.

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Fig 3) The same bird as in Figure 2. Photo by Mike Rogers. Copyright 1998.

Fig 4) The same bird as in Figure 2. Photo by Mike Rogers. Copyright 1998.

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