Gull season continues, and I found a small group to photograph that contained a few interesting individuals. One of them appears to be similar to an American Herring Gull, but with light gray undersides on its wingtips (more details below). I am tentatively calling this a Cook Inlet gull, which from the new Ayyash Gull Guide book appears to be somewhat under-reported locally, though I am seeing reports of others in the area (perhaps due to this new book that came out!).
These photos are © 2024 Phil Thompson, all rights reserved.
My "birds in review" collages can be found here.
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9:23AM Tuesday December 10, 2024
American Herring x Glaucous-winged Gull (hybrid)This is the same bird described in the last photo below.
9:23AM Tuesday December 10, 2024
American Herring x Glaucous-winged Gull (hybrid)
9:23AM Tuesday December 10, 2024
unknown
9:23AM Tuesday December 10, 2024
unknown
9:24AM Tuesday December 10, 2024
Western x Glaucous-winged Gull (hybrid)
9:24AM Tuesday December 10, 2024
Western x Glaucous-winged Gull (hybrid)
9:24AM Tuesday December 10, 2024
Western x Glaucous-winged Gull (hybrid)
9:27AM Tuesday December 10, 2024
American Herring Gull
9:29AM Tuesday December 10, 2024
Western x Glaucous-winged Gull (hybrid)
9:29AM Tuesday December 10, 2024
Western x Glaucous-winged Gull (hybrid)
9:29AM Tuesday December 10, 2024
Western x Glaucous-winged Gull (hybrid)
9:31AM Tuesday December 10, 2024
American Herring Gull
9:31AM Tuesday December 10, 2024
American Herring Gull
9:31AM Tuesday December 10, 2024
American Herring Gull
9:31AM Tuesday December 10, 2024
American Herring x Glaucous-winged Gull (hybrid)
9:35AM Tuesday December 10, 2024
Glaucous-winged Gull, Western x Glaucous-winged Gull (hybrid)
9:35AM Tuesday December 10, 2024
Glaucous-winged Gull, Western x Glaucous-winged Gull (hybrid)
9:36AM Tuesday December 10, 2024
unknown, Western x Glaucous-winged Gull (hybrid)
9:36AM Tuesday December 10, 2024
unknown, Western x Glaucous-winged Gull (hybrid)
9:36AM Tuesday December 10, 2024
unknown, Western x Glaucous-winged Gull (hybrid)
9:36AM Tuesday December 10, 2024
unknown, Western x Glaucous-winged Gull (hybrid)
9:39AM Tuesday December 10, 2024
American Herring x Glaucous-winged Gull (hybrid)This shot really shows the light gray undersides on the primaries. Aside from that major factor, the bill is not bulbous enough for Olympic Gull, the bill is too long for Thayer's Gull, the eye might appear slightly darker than expected for Herring, the back appears to be fairly dark but underside of wingtips is too light for Vega Gull (which would be too rare to be likely anyway), and from my photos I cannot tell orbital color but I can't rule out orange (Ameriacan Herring genes), pink (Glaucous-winged genes), or red (Vega). I am guessing this is a Cook Inlet (American Herring x Glaucous-winged hybrid) with lots of Herring influence, but it could also be a "white-winged" type Herring which Ayyash shows in his book.
© 2025 Phil Thompson
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