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הערות
Thayer's 1: the immature 2nd cycle. Light underside to opposite primary/P10. Not as light as a Kumlien's, darker than a Herring Gull. Pale bluish-gray mantle. Primaries with pale edges running the the inner web of the wing.
פרטי השורה
FHC, submitted 02.19.19 These are really normal counts here in late January/early February. I expect most of these birds will be gone as soon as/if it warms up in early March. Two adults and one immature- a 2nd cycle. The immature had some gray in the scapulars at the top of the back and primaries with pale fringes that did not run to the outer webs of the primaries. The primary panel as a whole being light brown, not dark like a Herring Gull, but darker than the mantle and also the tertials- the feathers just above the primaries. Small rounded head and with a bill blunter and smaller than the 2nd cycle Herring it was near. The bill also was diffusely dark near the tip with dark running back along the cutting edge of the bill, not the Glaucous-like clean cut black at the end of the bill with a pink-base that the 2nd cycle Herring near it showed, and which others can show. It is said that some 2nd cycle ICGUs can show a Glaucous-like bill, but I have never seen one yet. A small Glaucous with longer wings can be confusing. Immediately prior to this observation a 2nd cycle Kumlien's was seen in flight at the Elkhart Landfill, but I do not believe this is that bird. The primaries on that bird were white enough for it to be confused as a Glaucous Gull, on two separate occasions by multiple persons, and the primaries of that Kumlien's were later seen to be whitish from the same @ distance as the bird in this observation. Thayer's usually have primaries darker than the body, being closer in lineage to the Herring Gull, and Kumlien's show primaries not any darker than the body, especially from a distance, being closer in lineage to the Iceland Gull glaucoides.
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