Lots of gulls (roughly 700) were still at Jackson Lake this morning (Saturday), feeding with the grebes and cormorants and then resting on the north side of the lake. As I arrived, a large, very pale, dark-billed gull (first impression Glaucous-Winged or Glaucous-Winged x Herring, but I don't know) flew by, turned, and then was outta there. Otherwise, I found 5 Lesser Black-backed Gulls, 1 first-year Thayer's Gull, Herring, California, Franklin's, Bonaparte's, and Ring-billed Gulls. No sign of the Iceland Gull.
Although I didn't see a gull that looked quite like the candidate Western Gull from Monday, I've decided to leave Monday's gull as unidentified. Observing gulls today was a good reminder at how difficult it is to observe the relevant characteristics at great distance for the breeding-plumage dark-mantled gulls. David Dowell Longmont, CO -- You received this message because you are subscribed to the Google Groups "Colorado Birds" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/cobirds/6e2902c2-90f7-44f5-90e6-65cac0960643%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
