Common Gull (Kamchatka) (Larus canus kamtschatschensis) at Low Beach, Nantucket; December 30, 2023. Photograph by Jeremiah Trimble. Unlike most Kamchatka Gulls, SconsetKam shows a single mirror on p10 only. https://macaulaylibrary.org/asset/613091067
.jpg?ver=G5pLy5OwzMwp-szTZyE4iA%3d%3d)
Common Gull (Kamchatka) (Larus canus kamtschatschensis) at King’s Beach, Lynn; February 19, 2018. Photograph by Marshall J. Iliff. Old Reliable shows two large mirrors—and a small one on p8 in some years—and 11 primaries in the right wing. https://macaulaylibrary.org/asset/86745031
To view the rest of the article you'll need to
subscribe. Bird Observer publishes original articles on birding locations, on avian populations and natural history, on regional rarities, field notes, field records, photographs, and art work.