Thanks Christian! It is very helpful to have as much expertise in Colorado as we do to help us non-experts who sometimes go down the wrong track with an ID. (Guilty as charged - I had incorrectly thought both Pomeraine and Parasitic before Long-Tailed).
Regards, Mark Minner-Lee Superior, CO Sent from my iPhone On Sep 16, 2014, at 8:23 PM, Christian Nunes <[email protected]> wrote: > Dear Birders, > > I went down to the north shore of Boulder Reservoir from around 5:15-6 pm > this evening. For most of the time, the jaeger was sitting on the water just > beyond the buoys. The bird wasn't all that big, noticeably smaller than a > relatively adjacent Ring-billed Gull. The overall color tone was cold, > especially noticeable on the head and neck. In good low afternoon light, > there was sometimes a hint of brown in the head/neck, but it wasn't as > apparent as one would expect on a young Parasitic. It also lacked a pale > crescent above the bill. The bill was slight and tipped with black, and I did > not rely heavily upon the gray/dark ratio or bill shape at such a distance. > There are better field marks to focus on. The back, scapulars, and wing > coverts were all dark with pale yellowish tips, giving the bird a > well-patterned look. The primaries were solid black with no pale tips. The > under tail coverts were pale, almost white, with black bars. The wings were > very long, extending well past the tip of the tail while sitting on the > water. While floating, the caboose rode high in the water, and combined with > the small size it gave the bird a very dainty and Sabine's Gull-esque feel. > > Eventually, the bird took off and made a few wide circles fairly close to the > shore. In flight, one very bright white primary shaft was apparent, with a > second fainter shaft being just visible. The rest of the flight feathers were > distinctly dark from above. The auxilaries below were patterned with > black-and-white, with no noticeable color. The belly was the palest part of > the undercarriage, with the head and chest being darker and the barred under > tail coverts contrasting as well. > > All of these details make me settle upon a juvenile intermediate-morph > LONG-TAILED JAEGER as the likely identification. No photos to corroborate, > but maybe others obtained some. > > Thanks, > > Christian Nunes > Boulder, CO > > CC: [email protected] > From: [email protected] > Subject: Re: [cobirds] Jaeger sp. , Boulder Res. , Boulder Co. > Date: Tue, 16 Sep 2014 18:00:32 -0600 > To: [email protected] > > At Boulder Res right now and Jaeger took flight towards SE corner. Looks to > be a Juv Pomeraine Jaeger based on rounded tail, bulky bill, and noticeable > hook to bill but didn't see it in flight long enough to see > underwing/upperwing clearly. > > Would appreciate clarification from anyone else who sees it. > > Regards, > > Mark Minner-Lee > Superior, CO > > Sent from my iPhone > > On Sep 16, 2014, at 3:24 PM, Todd Deininger <[email protected]> wrote: > > NE corner, found by David Dowell > > > -- > 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/CABv4Dr9GMCAiC2C6Ode6pPngn8C_ZxP_oZugOm5P880aknQtFQ%40mail.gmail.com. > For more options, visit https://groups.google.com/d/optout. > > -- > 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/2DE2C10F-0E3B-40D7-8193-EF1FD927AF7E%40gmail.com. > For more options, visit https://groups.google.com/d/optout. > -- > 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/COL129-W27F39BB0FC8D3D891ED93CBCB60%40phx.gbl. > For more options, visit https://groups.google.com/d/optout. -- 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/DEE70DB2-5D06-4521-BC16-40AD7A8294F7%40gmail.com. For more options, visit https://groups.google.com/d/optout.
