[Tweeters] yesterday's white gull in Burlington
garybletsch at yahoo.com
Tue Feb 23 08:57:36 PST 2021
The same all-white gull that I reported yesterday (the 22nd) was apparently seen by two other birders. A bird answering the same description was seen flying over the flats west of Burlington on the afternoon of the 21st; the bird that I saw was also seen and photographed at the ballfields after I reported it from there.
I put it on eBird as a Glaucous Gull immediately, in order to alert birders, hoping that someone with a good camera might get better photos. However, I was able to add my mobile-phone photos to my eBird checklist today, so there are several more images to inspect. My photos are the best of a bad lot, though.
Caution: the following paragraph may contain 4-letter codes, or may have been produced in a facility that produces four-letter codes, tree nuts, gluten, and peanuts.
I think that this bird is most likely a leucistic individual, rather than a Glaucous Gull. It might be a GWGU, a GLGU, or a GLGU X GWGU, and it might be a leucistic individual of any of those categories. I don't think it's a "Thayer's" Gull, because the bill and the shape of the head seemed wrong--I see none of the "delicate-looking" or "gentle-looking" jizz of the Thayer's Gull in this bird. I suppose there might also be some Herring Gull in this bird's family tree, come to think on it.
I'd love to hear any opinions as to this bird's identity!
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