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Stint ID in California (was Bluethroat Southern California)

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  • Stint ID in California (was Bluethroat Southern California)

    let's hope it's another good asian year for southern california. Bluethroat on San Clemente Island today (photos below):
    http://picasaweb.google.com/jfidorra/Bluethroat091408#
    and a Little Stint at Moonglow Dairy (would be good to get some stint expert input):
    http://montereybay.com/creagrus/MTYbirdsLIST.html
    Last edited by AndyB; September 15th, 2008, 09:46 PM. Reason: fixed stint link
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  • #2
    As to a good Asian year for Southern California; there was an Eastern Yellow Wagtail in Santa Barbara County on September 1, 2008. http://mysite.verizon.net/res0d1yq . And a Little Stint just out of Southern Cali in Monterey County this weekend. I too am hoping for an Arctic & Dusky Warbler for my patch this fall. I would like birders with experience with Buethroats to comment on the subspecies of this bird. And what is the theory how such a bird got to Southern California? Mirror/180 does not seem to apply here.

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    • #3
      Forgot about that Yellow Wagtail. Last year saw both Arctic and Dusky Warblers so maybe another good year is in the making. Presumably this Bluethroat is svecica which breeds in Alaska.
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      • #4
        Andy

        there's something odd about the Little Stint that gives a bit of concern. I can't work out if it just the odd feeding angle, but the pale lower scapulars, with dark subterminal marks, may be another.

        Brian S

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        • #5
          more photos here on Bill Hill's site:
          http://fp2k.redshift.com/billhill/Li...nt/index.htm#7
          My Surfbirds Photo Albums

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          • #6
            Andy

            Still looks like a Red-necked to me. As well as the plumage, that flat-backed appearance is typical. See this site for lots of juv Red-necked.

            http://homepage2.nifty.com/stints/ca...ckedstint.html

            In particular this one

            http://homepage2.nifty.com/stints/ca...edneck-jO.html

            Brian S

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            • #7
              Originally posted by W. Ruskin Butterfield View Post
              And what is the theory how such a bird got to Southern California? Mirror/180 does not seem to apply here.
              We touched on Sibe vagrancy to SOCAL in Gilroy & Lees (2003). See also here.

              Alex
              Dept. of Zoology, University of Cambridge, UK

              My website - Neotropical Bird Club -Tropical Forest Research - Punkbirder - Wikiaves

              In natural science the principles of truth ought to be confirmed by observation. Carolus Linnaeus

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              • #8
                Thanks for your persistence on the stint. It's been nagging me too. I'm rusty on stints (not seeing them over here at all) but did get a refresher with an adult Red-necked last month and reminded of how they can appear fat, short-legged and flat-backed when feeding compared to my memories of Little.

                This Monterey bird structurally has pro Red-necked features including being flat-backed, short-legged and short-billed. Plumage-wise, pale lower scapulars with dark subterminal bars seems to be visible but tough with these photos on my monitor. The rather poorly marked breast (compared to classic Little) would also seem to favor Red-necked no? The photos on Stint Fan's website in Brian's link (a must have bookmark for wader enthusiasts by the way) show some juveniles with split supercilium and "mantle braces" that match this bird, in particular this first link. There also seems to be photos with juveniles with some warm peachey breast sides (esp one labelled rufous is very extreme).
                http://homepage2.nifty.com/stints/ca...dneck-jAB.html

                By the way, if this is a Red-necked, it would be the first juvenile I believe to be IDed in CA.

                Thanks for the reminder to your excellent article Alex. Scatter theory would seem to apply to the astonishing siberian and eastern vagrants that turn up in the middle of the desert at random watering holes east of LA and a long way from any coastal migrant trap eg recent years has produced spring Eye-browed Thrush, Black-backed Wagtail, Dusky Warbler, Gray-tailed Tattler, Eurasian Whimbrel, Red-necked Stint and Wood Sandpiper, Arctic Warblers and currently a Red-throated Pipit. I guess a lot of these asian migrants are just filtering through California in decent numbers and only a few are being found at the more intensively watched areas. I imagine they get lost in the wintering grounds in central america - I guess it's just a fluke that Yellow-browed Warbler, Olive-backed Pipit and Dotterel have been found just south of the border in Mexico in recent years. There's presumably a lot more out there lurking unseen.
                Last edited by AndyB; September 23rd, 2008, 08:25 AM.
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                • #9
                  CA Stint Discussion

                  Whilst Stint discussion is fresh, wanted to bump up this thread for stint input please. Bird is Monterey's second Little Stint

                  The two pages of photos are here
                  http://creagrus.home.montereybay.com/MTYbirdsLIST.html
                  http://fp2k.redshift.com/billhill/Li...nt/index.htm#7
                  My Surfbirds Photo Albums

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                  • #10
                    Accepted as a Little Stint (Caliris minuta ) by the easy-breezy California Rare Bird Committee.
                    http://www.californiabirds.org/cbrc_book/update.pdf .

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                    • #11
                      Originally posted by W. Ruskin Butterfield View Post
                      Accepted as a Little Stint (Caliris minuta ) by the easy-breezy California Rare Bird Committee.
                      http://www.californiabirds.org/cbrc_book/update.pdf .
                      I don't think they have nailed this one. There is a good case for Little argued here (http://creagrus.home.montereybay.com/MTYbirdsLIST.html), but these are a difficult species pair and subtle aspects, like bill shape and posture, are very important. In the discussion they focus on some aspects of the scaps, but I could counter-argue that the inner greater coverts are better for R-n Stint - on Little they are more typically black centred, on Red-necked they are paler with a dark shaft streak and sometimes a small anchor subterminally. [And is that bill long and fine enough for Little?]

                      Two Little
                      http://homepage2.nifty.com/stints/ca...little-jL.html
                      http://homepage2.nifty.com/stints/ca...little-jF.html

                      Two Red-necked
                      http://homepage2.nifty.com/stints/ca...edneck-jM.html
                      http://homepage2.nifty.com/stints/ca...edneck-jP.html

                      Anyway, a tough call.

                      Brian S

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                      • #12
                        I agree, tough call and statistically more likely a Red-necked 12 records versus 10 for Little. Do you have a comment on the earlier Monterey record?
                        Photo here page 13 of 36?
                        http://64.106.42.23/sora/wb/v19n04/p0129-p0164.pdf .

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                        • #13
                          Originally posted by W. Ruskin Butterfield View Post
                          Do you have a comment on the earlier Monterey record?
                          Photo here page 13 of 36?
                          http://64.106.42.23/sora/wb/v19n04/p0129-p0164.pdf .
                          I reckon this one is fine.

                          Brian S

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                          • #14
                            This one looks good as juvenile Red-necked Stint found by today by Todd Easterlea who also found the stint discussed above:
                            http://www.sterlingbirds.com/red_nec...nt_08_2009.htm

                            Also, in case anyone hasn't seen the discussion on ID Frontiers about a peep in Ohio that was being considered as Little Stint but appears to be a bright Semi-p:

                            http://www.rarebird.org/forum/forum_posts.asp?TID=4267
                            Last edited by AndyB; August 31st, 2009, 04:41 AM.
                            My Surfbirds Photo Albums

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                            • #15
                              More photos now on Stop Press:
                              http://www.surfbirds.com/cgi-bin/gal...lery=gallery10
                              Anyone have any issues? Offline there have been some concerns about whether it's a stint.
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