Note also the immature Herring Gulls' wing and tail pattern.
Note also the immature Herring Gulls' wing and tail patterns.
Note tail pattern and secondary bar.
Staten Island, April 1997.
There is a discussion of this bird on the responses page.
Then below is a photo of an adult Thayer's taken in early April 1997 on Staten Island, New York.
Click on the thumbnail image to load the full image. Set your monitor to at least thousands of colors.
Note also the immature Herring Gulls' wing and tail pattern.
Note also the immature Herring Gulls' wing and tail patterns.
Note tail pattern and secondary bar.
Staten Island, April 1997.
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