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ID-FRONTIERS for September 1-7, 2002

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Messages are displayed in the order they were received.
 Subject From Date  Time 
 Re: Dowitcher moult  Matt Kenne   Sun, 1 Sep 2002  2:22pm 
 East Asian Willow Warblers  Lethaby, Nick  Sun, 1 Sep 2002  9:28pm 
 Re: East Asian Willow Warblers  Norman D.van Swelm  Mon, 2 Sep 2002  3:13pm 
 Fw: SA Shorebirds  Norman D.van Swelm  Mon, 2 Sep 2002  3:31pm 
 C. mauri in Bolivia?  Arne Lesterhuis   Mon, 2 Sep 2002  4:40pm 
 Prebasic Molt in Dowitchers  Jean Iron   Mon, 2 Sep 2002  5:25pm 
 FW: Hooded Merg eye colour  Lethaby, Nick  Tue, 3 Sep 2002  8:12am 
 Fw: Prebasic Molt in Dowitchers  Matt Kenne   Tue, 3 Sep 2002  10:22am 
 Re: Dowitcher moult (fwd)  Ian Paulsen   Tue, 3 Sep 2002  11:27am 
 Re: FW: Hooded Merg eye colour  Glenn A dEntremont   Tue, 3 Sep 2002  5:43pm 
 dowitcher prebasic molt  Michael O'Brien  Wed, 4 Sep 2002  1:43pm 
 Interesting shearwater from Ascension Island  Angus Wilson   Wed, 4 Sep 2002  2:14pm 
 Fw: Prebasic Molt in Dowitchers  Matt Kenne   Wed, 4 Sep 2002  4:59pm 
 Fw: Dowitcher Moult in BNA  Matt Kenne   Thu, 5 Sep 2002  3:30pm 
 RFI: is this a Long-toed Stint or a Least Sand?  Martin Reid   Thu, 5 Sep 2002  8:29pm 
 Re: RFI: is this a Long-toed Stint or a Least Sand?  Mike Patterson   Thu, 5 Sep 2002  9:16pm 
 Re: RFI: is this a Long-toed Stint or a Least Sand?  Colin Bradshaw   Thu, 5 Sep 2002  11:46pm 
 Re: RFI: is this a Long-toed Stint or a Least Sand?  KACastelein and DJLa  Fri, 6 Sep 2002  9:10am 
 Re: RFI: is this a Long-toed Stint or a Least Sand?  Lethaby, Nick  Fri, 6 Sep 2002  9:37am 
 more Least? Sandpipers  Dr. Michael M. Roger  Fri, 6 Sep 2002  10:13am 
 Re: RFI: is this a Long-toed Stint or a Least Sand?  Mike Patterson   Fri, 6 Sep 2002  2:04pm 
 LTST vs. LESA  Brian Daniels   Fri, 6 Sep 2002  4:08pm 
 Re: RFI: is this a Long-toed Stint or a Least Sand?  Jerry Tangren   Fri, 6 Sep 2002  5:05pm 
 Homework for September  Michel Bertrand   Sat, 7 Sep 2002  8:34pm 
 Least Sand vs Long-toed Stints  Julian Hough   Sat, 7 Sep 2002  10:50am 
 Fw: Dark Morph Broadwings...seeking reports of sightings  Jim Barton   Sat, 7 Sep 2002  2:02pm 
To use email addresses replace '(AT)' with '@'.
This is done to confuse the spam 'bots.


[ << | >> | ^^ ] Subject: Re: Dowitcher moult From: Matt Kenne <mkenne(AT)NETAMUMAIL.COM> Date: 1 Sep 2002 2:22pm John, and other Frontierspeople, > > Recent field viewing and photography of adult hendersoni SBDO in Wisconsin > > in late July and August have caused me to look into what references there > > may be concerning the timing of Dowitcher pre-basic moult. > > The standard field guide info states that SBDO moult or complete their moult > > on their wintering sites while LBDO moult on staging areas before their > > final wintering sites are reached inferring that any moulting adult encountered > > where Dowitcher do not winter can be assumed to be LBDO. Various discussions > > of quiz birds on bird websites and previously here often contradict each > > other and most offer no refs for their claims. I applaud the effort to look outside the circle of references citing each other concerning dowitcher molt. I've had similar concerns when observing Iowa dows, and again most recently when attempting to identify that latest mystery dow on Joe Morlan's site. Dennis Paulson's Shorebirds of the Pacific Northwest is the only reference I have that tries to treat dow molt in detail, but its accounts are somewhat at odds with the statements made during the June 2001 discussion of earlier mystery dowitchers on that site. I don't have the BNA account for Short-billed Dowitcher here, but the discussion of flight feather molt in the BNA Long-billed Dowitcher account and its comparison with Short-billed is based heavily on Paulson's work and unpublished Sibley data. Is there anybody that knows anymore where the field guide molt information originated? > > I have been attempting to contact Dowitcher researchers who might have some > > insight into moult timing based on actual examination of living birds. > > Cheri Gratto-Trevor of the Canadian WS referred me to an "occasional paper" > > of great interest, the relevant portion is transcribed below. I also asked > > Cheri to comment on any body moult observed at the time of the described flight > > feather moult (below); she states "I seem to recall they were massively in body moult as well." > > Very few shorebirds moult flight feathers during migration in Canada (CLGT, > > unpubl. data). At the Quill Lakes, dowitchers were the only shorebirds found > > with active flight feather moult (i.e., wing and tail feathers were being > > replaced). In 1990, none of the six Short-billed Dowitchers examined was in > > active moult, while 43% (9/21) of Long-billed Dowitchers were moulting. > > Birds captured as early as 19 July were moulting primaries, and some had > > initiated secondary moult by 25 July. In 1991, 42% (8/19) of Short-billed > > Dowitchers examined were in moult, compared to 88% (15/17) of Long-billed > > Dowitchers. This observation is fascinating because it goes against the commonly held belief, but also frustrating because, if found to be regularly accurate, it breaks one of the only yardsticks we can judge these birds by. What I want to know is: how were these identifications of molting fall birds made? If they were "massively in body molt", as I would expect them to be in July and August, why weren't those remige-molting Short-billeds actually mis-identified Long-billeds? Measurement would tell nothing absolute, and they certainly couldn't id them individually by voice before capture. Another finding of this study that need clarification: "Tail moult in dowitchers was first noted in early August, and by 8 August, a few birds were missing all tail feathers." Does this refer to "both" species of birds, and was it only those that were in active wing-molt? > > However, even some Short-billed Dowitchers present in mid August were not moulting > > flight feathers, while all Long-billed Dowitchers were in active moult at that time. While it's hardly a useful sample, it's interesting that the adult Long-billed Dowitcher wing at www.ups.edu/biology/museum/LBDOwing1.jpg has a full compliment of primaries in August (date not given). Matthew Kenne Algona, Iowa mkenne(AT)netamumail.com
[ << | >> | ^^ ] Subject: East Asian Willow Warblers From: "Lethaby, Nick" <nlethaby(AT)TI.COM> Date: 1 Sep 2002 9:28pm This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. ----INCLUDING text/plain MIME SECTION---- All: I would be wary about making assumptions that all E. Asian Willow populations look like the descriptions of Yakutensis. I have seen two Willow Warblers in Japan. I also obtained another photo of one which I sent off to Per Alstrom who agreed it was a Willow Warbler. These birds varied from all white to mostly yellow underparts and looked reasonably green above. Interestedly, they were consistent in showing blackish legs, with just the soles of the feet being orange. My recollection is that Yakutensis is supposed to have very pale legs. While it's hard to be sure where the vagrant Willow Warblers in Japan come from, probability would suggest it involves the most easterly populations that would likely be the source for Alaska birds. Much of NE Russia is inaccessible and I doubt there are representative selections of specimens from throughout the range. Nick Lethaby -----Original Message----- From: Ian Paulsen [mailto:ipaulsen(AT)KRL.ORG] Sent: Friday, August 30, 2002 10:29 AM To: BIRDWG01(AT)listserv.arizona.edu Subject: [BIRDWG01] Willow Warbler in Alaska HI ALL: Just got in an e-mail that Paul Lehman et al. found a Willow Warbler (Phylloscopus trochilus)at Gambell, St. Lawrence Island, Alaska (25-26 Aug. 2002). Originally identified as a Chiffchaff (P. collybita) but after reviewing video-tape and consulting with other birders and reference materials the bird was identified. This is a first for North America (although a specimen from Pt. Barrow Alaska was thought to be this species that was collected on 11 June 1968, was re-examined and turned out to be an Arctic Warbler (P. borealis). sincerely Ian Paulsen Bainbridge Island, WA, USA ipaulsen(AT)krl.org A.K.A.: "Birdbooker" "Rallidae all the way" ----DELETED text/html MIME SECTION----
[ << | >> | ^^ ] Subject: Re: East Asian Willow Warblers From: "Norman D.van Swelm" <Norman.vanswelm(AT)WXS.NL> Date: 2 Sep 2002 3:13pm This is a multi-part message in MIME format. ----INCLUDING text/plain MIME SECTION---- Nick, can you make the photo of the bird you saw in Japan available = to us please? Your description fits the race acredula which occurs at = least as far east (from a European perspective) as the Pechora delta. = Considering the fact that all Willow Warbler races migrate SW to Africa = there occurrence in Japan and Alaska is quite extraordinary. Nick wrote:>I would be wary about making assumptions that all E. = Asian Willow populations look like the descriptions of Yakutensis. I = have seen two Willow Warblers in Japan. I also obtained another photo of = one which I sent off to Per Alstrom who agreed it was a Willow Warbler. = These birds varied from all white to mostly yellow underparts and looked = reasonably green above. Interestedly, they were consistent in showing = blackish legs, with just the soles of the feet being orange. My = recollection is that Yakutensis is supposed to have very pale legs. While it's hard to be sure where the vagrant Willow Warblers in = Japan come from, probability would suggest it involves the most easterly = populations that would likely be the source for Alaska birds. Much of NE = Russia is inaccessible and I doubt there are representative selections = of specimens from throughout the range. Nick Lethaby=20 =20 =20 -----Original Message-----=20 From: Ian Paulsen [mailto:ipaulsen(AT)KRL.ORG]=20 Sent: Friday, August 30, 2002 10:29 AM=20 To: BIRDWG01(AT)listserv.arizona.edu=20 Subject: [BIRDWG01] Willow Warbler in Alaska=20 =20 =20 HI ALL:=20 Just got in an e-mail that Paul Lehman et al. found a Willow = Warbler=20 (Phylloscopus trochilus)at Gambell, St. Lawrence Island, Alaska = (25-26=20 Aug. 2002). Originally identified as a Chiffchaff (P. collybita) but = after=20 reviewing video-tape and consulting with other birders and reference = materials the bird was identified. This is a first for North America = (although a specimen from Pt. Barrow Alaska was thought to be this = species=20 that was collected on 11 June 1968, was re-examined and turned out = to be=20 an Arctic Warbler (P. borealis).=20 sincerely=20 Ian Paulsen=20 Bainbridge Island, WA, USA=20 ipaulsen(AT)krl.org=20 A.K.A.: "Birdbooker"=20 "Rallidae all the way"=20 -------------------------------------------------------------------------= --- =20 Deze e-mail is door E-mail VirusScanner van Planet Internet = gecontroleerd op virussen. Op http://www.planet.nl/evs staat een = verwijzing naar de actuele lijst waar op wordt gecontroleerd.=20 ----DELETED text/html MIME SECTION----
[ << | >> | ^^ ] Subject: Fw: SA Shorebirds From: "Norman D.van Swelm" <Norman.vanswelm(AT)WXS.NL> Date: 2 Sep 2002 3:31pm Some time ago Arne Lesterhuis <djentl(AT)HOTMAIL.COM> requested to get into contact with Dr.A.L.Spaans. Dr.Spaans tried the above address but his message keeps bouncing. Arne can you contact me, please? Norman
[ << | >> | ^^ ] Subject: C. mauri in Bolivia? From: Arne Lesterhuis <djentl(AT)HOTMAIL.COM> Date: 2 Sep 2002 4:40pm Hi all, Firts I would like to thank all who helped me with getting in touch with shore-birders in the Guyana's. Now a new question: Last year I remember to have heard that someone observed "flocks" of Calidris mauri in Bolivia. Can someone tell me whether this was true? Bolivian Shore-birders don't seem to be aware of such a record. So, I hope now somebody can give me some more info. As usual, thanks in advance! Best wishes, Arne Arne J. Lesterhuis Guyra Paraguay _________________________________________________________________ Charle con sus amigos online usando MSN Messenger: http://messenger.msn.com
[ << | >> | ^^ ] Subject: Prebasic Molt in Dowitchers From: Jean Iron <jeaniron(AT)SYMPATICO.CA> Date: 2 Sep 2002 5:25pm Hello Birders, I've been studying the molts and plumages of Long-billed and Short-billed Dowitchers for more than 15 years in southern Ontario. My comments here refer to southbound migrants in alternate plumage. Adult Long-billed Dowitcher are regular in small numbers in southern Ontario. I've seen early adults in mid-July, but most adults are seen in August and early September. Early Longbills tend to be in almost full worn alternate plumage, but later birds often are in patchy body molt. Occasionally I've seen Longbills in wing molt, showing a gap in the primaries/secondaries when flying overhead. Adult hendersoni Short-billed Dowitchers are rapid fall migrants through southern Ontario. They arrive about the first week of July, being fairly common through July, becoming very rare after the first week of August. We get a few nominate griseus and some apparent griseus x hendersoni intergrades. Breeding birds in northern Ontario, which is between the main ranges of griseus and hendersoni, can appear similar to either subspecies or are of intermediate plumage, suggesting a mixture of both types here (James 1991). I have never seen any evidence of active or recent prebasic molt in adult Short-billed Dowitchers in southern Ontario. My observations agree with Dunn (1999) who states that Short-billed Dowitchers "do not molt during their southward flight, and probably don't initiate molt until they reach their wintering grounds." Also read the text under Long-billed Dowitcher on page 180 in the third edition of National Geographic Guide (1999) starting seven lines from the bottom of page 180. It says "Adult Long-billed go to favored locations to molt; Short-billed Dowitchers molt when they reach the winter grounds." This information was presumably written by Jon Dunn. There have been recent reports of migrant hendersoni Short-billed Dowitchers undergoing prebasic body and flight feather molt at staging areas in interior North America. I suggest that these studies be repeated to clearly eliminate the possibility of misidentified Long-billed Dowitchers. Claims of migrant hendersoni Short-billed Dowitchers in prebasic molt in interior North America should be confirmed with photographs. Literature Cited Dunn, J.L. 1999. Some Additional Thoughts on Dowitchers. Ohio Cardinal 23(1):30-33. Field Guide to the Birds of North America. 1999. Third Edition. National Geographic Society. Washington, D.C. James, R.D. 1991. Annotated Checklist of the Birds of Ontario. Second Edition. Royal Ontario Museum. Happy dowitcher watching, Ron Pittaway Minden and Toronto, Ontario E-mail: jeaniron(AT)sympatico.ca
[ << | >> | ^^ ] Subject: FW: Hooded Merg eye colour From: "Lethaby, Nick" <nlethaby(AT)TI.COM> Date: 3 Sep 2002 8:12am This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. ----INCLUDING text/plain MIME SECTION---- I'm posting this for Richard Millington. -----Original Message----- From: Millington/BIS [mailto:sales(AT)birdingworld.co.uk] Sent: Monday, September 02, 2002 2:31 AM To: Lethaby, Nick Subject: Hooded Merg eye colour Many thanks cheers Richard .................................................... Subject: Hooded Merg eye colour Hello all A Hooded Merganser was found at the NW tip of Ireland yesterday; It is entirely female-like in plumage and has a pale bill base, but it has a yellow eye. My two part question is: Can juvenile/first-winter male Hooded Mergansers show a yellow eye by early September? or does the yellow eye on this date mean it has to be an eclipse adult drake? Does anyone have local Hooded Mergansers they can check out today....? Any help much appreciated Many thanks in advance Richard sales(AT)birdingworld.co.uk <mailto:sales(AT)birdingworld.co.uk> (Birding World, Books for Birders & Birdline) Bird Information Service, Stonerunner, Coast Road, Cley next the Sea, Holt, Norfolk, NR25 7RZ, UK Tel. 44 (0) 1263 741139 Fax. 741173 Website www.birdingworld.co.uk <http://www.birdingworld.co.uk> ............................................................................ ................................ sales(AT)birdingworld.co.uk <mailto:sales(AT)birdingworld.co.uk> (Birding World, Books for Birders & Birdline) Bird Information Service, Stonerunner, Coast Road, Cley next the Sea, Holt, Norfolk, NR25 7RZ, UK Tel. 44 (0) 1263 741139 Fax. 741173 Website www.birdingworld.co.uk <http://www.birdingworld.co.uk> -----Original Message----- From: Lethaby, Nick < nlethaby(AT)TI.COM <mailto:nlethaby(AT)TI.COM> > To: BIRDWG01(AT)listserv.arizona.edu <mailto:BIRDWG01(AT)listserv.arizona.edu> < BIRDWG01(AT)listserv.arizona.edu <mailto:BIRDWG01(AT)listserv.arizona.edu> > Date: 02 September 2002 05:29 Subject: [BIRDWG01] East Asian Willow Warblers All: I would be wary about making assumptions that all E. Asian Willow populations look like the descriptions of Yakutensis. I have seen two Willow Warblers in Japan. I also obtained another photo of one which I sent off to Per Alstrom who agreed it was a Willow Warbler. These birds varied from all white to mostly yellow underparts and looked reasonably green above. Interestedly, they were consistent in showing blackish legs, with just the soles of the feet being orange. My recollection is that Yakutensis is supposed to have very pale legs. While it's hard to be sure where the vagrant Willow Warblers in Japan come from, probability would suggest it involves the most easterly populations that would likely be the source for Alaska birds. Much of NE Russia is inaccessible and I doubt there are representative selections of specimens from throughout the range. Nick Lethaby -----Original Message----- From: Ian Paulsen [ mailto:ipaulsen(AT)KRL.ORG <mailto:ipaulsen(AT)KRL.ORG> ] Sent: Friday, August 30, 2002 10:29 AM To: BIRDWG01(AT)listserv.arizona.edu Subject: [BIRDWG01] Willow Warbler in Alaska HI ALL: Just got in an e-mail that Paul Lehman et al. found a Willow Warbler (Phylloscopus trochilus)at Gambell, St. Lawrence Island, Alaska (25-26 Aug. 2002). Originally identified as a Chiffchaff (P. collybita) but after reviewing video-tape and consulting with other birders and reference materials the bird was identified. This is a first for North America (although a specimen from Pt. Barrow Alaska was thought to be this species that was collected on 11 June 1968, was re-examined and turned out to be an Arctic Warbler (P. borealis). sincerely Ian Paulsen Bainbridge Island, WA, USA ipaulsen(AT)krl.org A.K.A.: "Birdbooker" "Rallidae all the way" ----DELETED text/html MIME SECTION----
[ << | >> | ^^ ] Subject: Fw: Prebasic Molt in Dowitchers From: Matt Kenne <mkenne(AT)NETAMUMAIL.COM> Date: 3 Sep 2002 10:22am I actually meant to send this to the whole list. Matt ----- Original Message ----- From: Matt Kenne <mkenne(AT)netamumail.com> To: Jean Iron <jeaniron(AT)SYMPATICO.CA> Sent: Monday, September 02, 2002 11:00 PM Subject: Re: [BIRDWG01] Prebasic Molt in Dowitchers > > There have been recent reports of migrant hendersoni Short-billed > > Dowitchers undergoing prebasic body and flight feather molt at staging > > areas in interior North America. I suggest that these studies be repeated > > to clearly eliminate the possibility of misidentified Long-billed > > Dowitchers. Claims of migrant hendersoni Short-billed Dowitchers in > > prebasic molt in interior North America should be confirmed with > photographs. > > Is there a major molt-timing difference between the races that clouds the > issue? While Dennis Paulson's observations in Shorebirds of the Pacific > Northwest mostly pertain to caurinus, he does report rare occurrence of > hendersoni in the NW. That reference states: "Adults begin body molt soon > after arrival, underparts showing more and more white and then upperparts > more and more gray. In northern part of region body molt essentially > complete in some individuals by mid August." > > Matthew Kenne > Algona, Iowa > mkenne(AT)netamumail.com >
[ << | >> | ^^ ] Subject: Re: Dowitcher moult (fwd) From: Ian Paulsen <ipaulsen(AT)KRL.ORG> Date: 3 Sep 2002 11:27am HI: This is from Dennis Paulson. Ian Paulsen Bainbridge Island, WA, USA ipaulsen(AT)krl.org A.K.A.: "Birdbooker" "Rallidae all the way" ---------- Forwarded message ---------- Date: Tue, 3 Sep 2002 10:44:37 -0700 From: Dennis Paulson <dpaulson(AT)ups.edu> To: Ian Paulsen <ipaulsen(AT)krl.org> Subject: Re: [BIRDWG01] Dowitcher moult (fwd) >HI DENNIS: > I thought you would be interested in this since your name came up! Ian, feel free to forward my comments. Adult Long-billed Dowitchers in this region molt profusely, both body and wings, during fall migration, although we don't know whether they do this at a single staging area or at several such areas along the way. We now know it's much more common and widespread than I indicated in my book, and I've seen it in specimens from all over North America. We have no evidence of the same phenomenon in Short-billed Dowitchers, the adults of which pass through here very rapidly in fall. It's very unlikely that such birds would undergo wing molt. I have looked at dozens of fall specimens of both species, and many, many LBDO are in heavy molt, including flight feathers, while I have never seen this in SBDO. I would agree with the correspondent who asked "why weren't the molting dowitchers Long-billed?" Dennis Paulson, Director phone 253-879-3798 Slater Museum of Natural History fax 253-879-3352 University of Puget Sound e-mail dpaulson(AT)ups.edu 1500 N. Warner, #1088 Tacoma, WA 98416-1088 http://www.ups.edu/biology/museum/museum.html
[ << | >> | ^^ ] Subject: Re: FW: Hooded Merg eye colour From: Glenn A dEntremont <gdentremont(AT)JUNO.COM> Date: 3 Sep 2002 5:43pm This past week I saw two Hooded Merganser which I thought were two immature. The base of the bills were yellowish which continued along the lower mandible and faded to orange before turning to black. The crests were not as buffy as I would expect for adult female, as well as being a little less "bushy" as an adult. The iris on both birds were dark. Hope this helps. Glenn On Tue, 3 Sep 2002 10:11:53 -0500 "Lethaby, Nick" <nlethaby(AT)TI.COM> writes: > I'm posting this for Richard Millington. > > -----Original Message----- > From: Millington/BIS [mailto:sales(AT)birdingworld.co.uk] > Sent: Monday, September 02, 2002 2:31 AM > To: Lethaby, Nick > Subject: Hooded Merg eye colour > > > Many thanks > cheers > Richard > .................................................... > Subject: Hooded Merg eye colour > > Hello all > > A Hooded Merganser was found at the NW tip of Ireland yesterday; > It is entirely female-like in plumage and has a pale bill base, > but it has a yellow eye. > > My two part question is: > Can juvenile/first-winter male Hooded Mergansers show a yellow eye > by early > September? > or does the yellow eye on this date mean it has to be an eclipse > adult > drake? > > Does anyone have local Hooded Mergansers they can check out > today....? > Any help much appreciated > > Many thanks in advance > Richard > Glenn d'Entremont gdentremont(AT)juno.com Stoughton, MA
[ << | >> | ^^ ] Subject: dowitcher prebasic molt From: "Michael O'Brien" <obrienm(AT)ALGORITHMS.COM> Date: 4 Sep 2002 1:43pm Birders, Over the past fifteen or so years, I have been looking into the question of adult prebasic molt in dowitchers along the mid-Atlantic coast (primarily New Jersey, Delaware, and Maryland). Here, what seems to be going on is that adult Long-bills arrive in mid-late July and begin molting right away, typically showing heavy body and flight feather molt through most of August. By early September their numbers dwindle and the remaining adults are in mostly basic plumage. Both hendersoni and griseus Short-billed Dowitchers show up in late June/early July and show no flight feather molt and essentially no body molt through July and into early August by which time most adults have passed through. After mid-August, things get more complicated. In selected areas (wintering sites?), the few remaining griseus Short-bills show heavy body and flight feather molt and quickly attain basic plumage. In other areas (non-wintering sites?), the remaining griseus show a moderate amount of body molt but the wings remain unmolted. In this same late August time period, the few adult hendersoni Short-bills that remain typically retain full alternate plumage with, at most, a few replaced scapulars. What I conclude from that is that both races of Short-billed Dowitcher molt on or very near the wintering grounds and that the Short-bills wintering on the mid-Atlantic coast are griseus, not hendersoni. Michael O'Brien West Cape May, NJ
[ << | >> | ^^ ] Subject: Interesting shearwater from Ascension Island From: Angus Wilson <wilsoa02(AT)ENDEAVOR.MED.NYU.EDU> Date: 4 Sep 2002 2:14pm To continue the discussion of the identification of Little/Audubon's type shearwaters in the Atlantic, I have added several new photos to the web page. http://www.oceanwanderers.com/Ascensionshear.html Shawneen Finnegan has generously provided her photos of the Cape May specimen from Sept 1999. This bird appears to be a Audubon's Shearwater (subspecies loyemilleri) but has blue rather than pink legs. Paul Scofield and Bernie Zoonfrillo have provided reference photos of Little Shearwater (subspecies kermadecensis and baroli) as well as Audubon's Shearwater (subspecies loyemilleri?). It is clear we still have a lot to learn about this widespread and complicated group of shearwaters! Additional thoughts and comments are very welcome. Again, thanks to all those who have contributed photos or their own experiences from the field. Angus Wilson http://www.oceanwanderers.com ------------------------------------------------- This mail sent through IMP: http://horde.org/imp/
[ << | >> | ^^ ] Subject: Fw: Prebasic Molt in Dowitchers From: Matt Kenne <mkenne(AT)NETAMUMAIL.COM> Date: 4 Sep 2002 4:59pm What the...? So the BNA account says SBDO molt both body plumage AND wing feathers while on southward migration?!? More comments from Dennis Paulson: ----- Original Message ----- From: Dennis Paulson <dpaulson(AT)ups.edu> To: Matt Kenne <mkenne(AT)netamumail.com> Sent: Wednesday, September 04, 2002 1:46 PM Subject: Re: Fw: [BIRDWG01] Prebasic Molt in Dowitchers > Hi Matt, > > Thanks for your lengthy letter and especially the one from Ron Pittaway. > There may well be differences in molt strategies in different subspecies > (or populations) of dowitchers. In general, the faster the southbound > migration, the less likely a shorebird will be seen in prebasic molt, but I > think this is just a matter of timing rather than molt strategy. The > quicker a species passes through our area, the less likely it will have had > time to proceed very far with body molt. Most fairly rapid long-distance > migrant shorebirds don't molt their flight feathers until they reach their > wintering grounds, but I think at least a good percentage of them begin > body molt during migration, many of them actually starting on the breeding > grounds. We just don't see much of it if they pass through quickly. > > But - having written this - I just had the idea to look at the account of > Short-billed Dowitcher in Birds of North America, in which the authors are > explicit in stating that body molt occurs during southbound migration in > this species, just as I've seen around here. Not only that, I am *shocked* > to read that flight-feather molt also occurs during this time, reported > both along the Atlantic coast (griseus and/or hendersoni) and in southern > Saskatchewan (surely hendersoni). I assume both of these statements > clearly refer to Short-billed rather than Long-billed, as their authors > certainly knew the two species, and I presume these were birds examined in > the hand. Thus Short-billed and Long-billed appear to have similar molt > strategies farther east. But I will make an equally strong claim that our > migrant caurinus don't molt their flight feathers while in the Pacific > Northwest, based on many specimens and observations (for years I've been > scrutinizing shorebirds in flight for wing molt). Perhaps they do in > California? > > When I stated in my note to Ian Paulsen "We have no evidence of the same > phenomenon in Short-billed > Dowitchers," I was writing about wing molt during migration, but that was > before I had looked at the BNA account. It's too bad this series is so > expensive, as it would be an asset in the library of all serious birders. > I'm fortunate that the university library buys them and stores them in the > museum - now I just have to read them all! > > And, finally, the difficulty of dowitcher identification is pointed out in > the color photo of the dowitcher at the beginning of the BNA Short-billed > Dowitcher account - it sure looks like a Long-billed to me! > > As there seems much discussion about whether SBDO molts in migration, I'd > appreciate it if you would forward it to wherever it's being discussed. > Thanks. > > Dennis > > Dennis Paulson, Director phone 253-879-3798 > Slater Museum of Natural History fax 253-879-3352 > University of Puget Sound e-mail dpaulson(AT)ups.edu > 1500 N. Warner, #1088 > Tacoma, WA 98416-1088 > http://www.ups.edu/biology/museum/museum.html
[ << | >> | ^^ ] Subject: Fw: Dowitcher Moult in BNA From: Matt Kenne <mkenne(AT)NETAMUMAIL.COM> Date: 5 Sep 2002 3:30pm John asked that I forward this for those of you without ready access to the BNA. Matt > > ----- Original Message ----- > > From: John Idzikowski <idzikoj(AT)csd.uwm.edu> > > To: Bill Whan <danielel(AT)iwaynet.net>; <mkenne(AT)netamumail.com> > > Sent: Thursday, September 05, 2002 1:26 PM > > Subject: Dowitcher Moult in BNA > > Here are some straight quotes from the SBDO account in Birds of North America, citations omitted (No 546, page 22): > > "Males start molting head, face and neck about July 16 on breeding grounds (females already departed). Adults in heavy > > body moult when they pass through Magdalen Is., Quebec, in mid-July and August and in the same time period along the > > mid-Atlantic coast. Molt of body feathering increases in intensity and molt of remiges begins as soon as birds leave > > breeding grounds. Along Atlantic Coast, adult females may replace all but outer three primaries by 5-10 August, males > > all but the outermost three primaries by August 18. Primary molt typically completed 5-15 Sept. Some adults finish body > > molt by mid-August in New Jersey, but mid-Sept. usual.. Some however still molting into Nov indicating that replacement > > suspended at times during migration. In s Saskatchewan Alexander and Gratto-Trevor reported that by 8 August a few > > birds were moulting all tail feathers. Wing moult progressed regularly from the first to the outer primary, and secondary > > moult from the first to the inner secondary. Secondary moult was initiated approximately at the time the sixth primary was > > moulted." _______ > > The LBDO BNA account (no 493, page 15) was published before the SB article and is in general agreement with past > > discussions here and statements in field guides and at bird websites that contrast the chronology dichotomy with SBDO as > > an ID character. There is no specific mention of the "staging area" concept for moulting adult LBDOs but it may be > > perhaps inferred: "body feather molt begins late Jul-Aug away from the breeding grounds, completed rapidly. The major > > discrepancy with the above SBDO account occurs in the statement "SBDO shows no wing molt at same time [as LBDO] > > (D. Sibley, unpubl)...Adult (LBDO) molt remiges while still migrating....in mid-Atlantic states active primary molt seen in > > July and August..."
[ << | >> | ^^ ] Subject: RFI: is this a Long-toed Stint or a Least Sand? From: Martin Reid <upupa(AT)AIRMAIL.NET> Date: 5 Sep 2002 8:29pm Dear all, I would appreciate getting some feedback about this calidris: http://www.martinreid.com/calidris.html - I feel that which ever species this is (unless it's a hybrid!), it is somewhat atypical, and presents an opportunity to learn. Cheers, Martin Martin Reid Fort Worth, Texas upupa(AT)airmail.net http://www.martinreid.com
[ << | >> | ^^ ] Subject: Re: RFI: is this a Long-toed Stint or a Least Sand? From: Mike Patterson <celata(AT)PACIFIER.COM> Date: 5 Sep 2002 9:16pm This is a typical juvenile Least Sandpiper. There is nothing remarkable or unusual in these photos. Here are a couple of fairly good close-ups of Least Sandpipers from the north Coast of Oregon: http://home.pacifier.com/~neawanna/temp/lesa_ex.html Martin Reid wrote: > > Dear all, > I would appreciate getting some feedback about this calidris: > http://www.martinreid.com/calidris.html > - I feel that which ever species this is (unless it's a hybrid!), it is > somewhat atypical, and presents an opportunity to learn. > Cheers, > Martin > > Martin Reid > Fort Worth, Texas > upupa(AT)airmail.net > http://www.martinreid.com -- Mike Patterson Astoria, OR celata(AT)pacifier.com A child who becomes acquainted with the birds about him hears every sound and puzzles out its meaning with a cleverness that amazes those with ears who hear not. -Neltje Blanchan http://www.pacifier.com/~mpatters/bird/bird.html
[ << | >> | ^^ ] Subject: Re: RFI: is this a Long-toed Stint or a Least Sand? From: Colin Bradshaw <drcolin.bradshaw(AT)BTINTERNET.COM> Date: 5 Sep 2002 11:46pm This seems to be a fiarly typical Least Sand to me. The bill shape is typical, the supercilium is not as marked as I would expect in LTS, nor is the chestnut cap, the mantle lines or rufous edgings above. -----Original Message----- From: NBHC ID-FRONTIERS Frontiers of Field Identification [mailto:BIRDWG01(AT)listserv.arizona.edu]On Behalf Of Martin Reid Sent: 06 September 2002 4:33 AM To: BIRDWG01(AT)listserv.arizona.edu Subject: [BIRDWG01] RFI: is this a Long-toed Stint or a Least Sand? Dear all, I would appreciate getting some feedback about this calidris: http://www.martinreid.com/calidris.html - I feel that which ever species this is (unless it's a hybrid!), it is somewhat atypical, and presents an opportunity to learn. Cheers, Martin Martin Reid Fort Worth, Texas upupa(AT)airmail.net http://www.martinreid.com
[ << | >> | ^^ ] Subject: Re: RFI: is this a Long-toed Stint or a Least Sand? From: KACastelein and DJLauten <birdsong(AT)HARBORSIDE.COM> Date: 6 Sep 2002 9:10am Martin, I will through my vote in with Mike and Colin's that this seems to me to be a fairly typical juvenile Least Sandpiper. Cheers Dave Lauten Bandon OR birdsong(AT)harborside.com Martin Reid wrote: > Dear all, > I would appreciate getting some feedback about this calidris: > http://www.martinreid.com/calidris.html > - I feel that which ever species this is (unless it's a hybrid!), it is > somewhat atypical, and presents an opportunity to learn. > Cheers, > Martin > > > Martin Reid > Fort Worth, Texas > upupa(AT)airmail.net > http://www.martinreid.com > >
[ << | >> | ^^ ] Subject: Re: RFI: is this a Long-toed Stint or a Least Sand? From: "Lethaby, Nick" <nlethaby(AT)TI.COM> Date: 6 Sep 2002 9:37am This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. ----INCLUDING text/plain MIME SECTION---- This bird does have a pale olive base to the lower mandible which is NOT typical at all of Least Sandpiper and supposedly a feature of many Long-toed Stints. -----Original Message----- From: KACastelein and DJLauten [mailto:birdsong(AT)HARBORSIDE.COM] Sent: Friday, September 06, 2002 9:14 AM To: BIRDWG01(AT)listserv.arizona.edu Subject: Re: [BIRDWG01] RFI: is this a Long-toed Stint or a Least Sand? Martin, I will through my vote in with Mike and Colin's that this seems to me to be a fairly typical juvenile Least Sandpiper. Cheers Dave Lauten Bandon OR birdsong(AT)harborside.com Martin Reid wrote: > Dear all, > I would appreciate getting some feedback about this calidris: > http://www.martinreid.com/calidris.html > - I feel that which ever species this is (unless it's a hybrid!), it is > somewhat atypical, and presents an opportunity to learn. > Cheers, > Martin > > > Martin Reid > Fort Worth, Texas > upupa(AT)airmail.net > http://www.martinreid.com > > ----DELETED text/html MIME SECTION----
[ << | >> | ^^ ] Subject: more Least? Sandpipers From: "Dr. Michael M. Rogers" <mrogers(AT)NAS.NASA.GOV> Date: 6 Sep 2002 10:13am ID Frontiers, As long as we're discussing Least Sandpipers and Long-toed Stints, I thought I'd mention another bird photographed by David Cardinal in Alviso, Santa Clara County on 28 Aug, 2002. David has posted 25 photos taken over a 25-minute period at http://www.cardinalphoto.com/sbb/082802-alviso/table1.htm During much of the time the bird was present it maintained the very upright, long-legged stance shown in many of the photos. David also says it appeared larger than the nearby Least Sandpipers and a few of the photos (e.g. DSC 7963, DSC 7973, DSC 8118) suggest pale at the base of the mandible, although this is probably reflection given what is visible in the other pictures. Apparently just another Least Sandpiper, but a nicely photographed one, including the toes! Mike Rogers Sunnyvale, CA
[ << | >> | ^^ ] Subject: Re: RFI: is this a Long-toed Stint or a Least Sand? From: Mike Patterson <celata(AT)pacifier.com> Date: 6 Sep 2002 2:04pm I figured that "field mark" would come up, so it was the first thing I checked. There is a pale olive bit to the bill, but it appears to be closer to the gape than the under part of the mandible. On the other hand, the image of the Least Sandpiper in hand that I posted does show a paler base to the lower mandible. (see: http://home.pacifier.com/~neawanna/temp/lesa_ex.html ). The bird's toes were measured at the time of capture and it is not a Long-toed. This is why I play it safe and use multiple field marks for my ID's. Now Michael Roger's bird, that's something! (see: http://www.cardinalphoto.com/sbb/082802-alviso/table1.htm ) It does not appear to have a pale base to the lower mandible, though the Least Sandpiper with it argueably does (see DSC_7962). > "Lethaby, Nick" wrote: > > This bird does have a pale olive base to the lower mandible which is > NOT typical at all of Least Sandpiper and supposedly a feature of many > Long-toed Stints. > -- Mike Patterson Astoria, OR celata(AT)pacifier.com A child who becomes acquainted with the birds about him hears every sound and puzzles out its meaning with a cleverness that amazes those with ears who hear not. -Neltje Blanchan http://www.pacifier.com/~mpatters/bird/bird.html
[ << | >> | ^^ ] Subject: LTST vs. LESA From: Brian Daniels <bedafort900(AT)AOL.COM> Date: 6 Sep 2002 4:08pm I consider Martin's bird a candidate for a Long-toed Stint for the following reasons: it appears to have white edged coverts contrasting with chestnut edged scapulars; the white fringe of the scapulars is interrupted by the black shaft streak; the white supercilium does not extend to the bill and connect on forehead as on typical juv LESA; the comma shaped mark in lores that interrupts the white supercilium; the darkest part of auriculars is posteriorly and not evenly dark throughout like in LESA. Other marks such as suggestion of split supercilium, perhaps a more reddish crown than LESA, and back pattern suggest LTST too. Are there photos that show the middle toe? The basic plumaged bird photographed on 28 August 2002 is clearly a LESA. Just look at the photos showing the middle toe as long as the bill and not longer as it would be in a LTST. Also the facial pattern is typical LESA. The behavior exhibited by this LESA is typical of both species and should not be the basis for identification between the two. Anyway, I've only seen the one LTST recorded in California so my experience is very limited, but the above marks listed I believe are very important and should be evaluated. Brian Daniels Long Beach, California
[ << | >> | ^^ ] Subject: Re: RFI: is this a Long-toed Stint or a Least Sand? From: Jerry Tangren <tangren(AT)WSU.EDU> Date: 6 Sep 2002 5:05pm On Friday, September 6, 2002, at 02:06 PM, Mike Patterson wrote: > > Now Michael Roger's bird, that's something! > (see: http://www.cardinalphoto.com/sbb/082802-alviso/table1.htm ) > > It does not appear to have a pale base to the lower mandible, > though the Least Sandpiper with it argueably does (see DSC_7962). > >> The Roger's photos illustrate a field mark often pointed out by Dennis Paulson, and which is clearly shown in the difference between the suspect bird and the Least Sandpiper: on a Least Sandpiper the back feathers are mostly dark with pale fringes while on a Long-toes Stint the feathers are mostly pale with a dark streak down the center. --Jerry <tangren(AT)wsu.edu>
[ << | >> | ^^ ] Subject: Homework for September From: Michel Bertrand <bertrmi(AT)COLBA.NET> Date: 7 Sep 2002 8:34pm Hi, A new mystery bird is on QuébecOiseaux quiz webpage at http://www.quebecoiseaux.qc.ca/HTML/Defi.html That's the quiz 24. A nice bird that will puzzle many of those who will look at it. For those who could have a problem in understanding the French text on the website, here is a translation. I hope you will try to identify the quiz bird and I will like very much to receive me your answer (for sure, you can answer in English if you wish so). Please don't include my message when replying, because I have to print a work copy of all the received answers when writing the official answer for the magazine. DÉFI 24 (translation of the website text) : There are always interesting birds at the Mount-Royal Cemetery in Montréal. Birding there in September, you spot something yellowish, above in the trees. That's a bird. Which is this bird? Why? Send your answer not later than November 5 to Michel Bertrand, 900 rue des Paysans, Sainte-Julie, Qc, Canada (J3E 1K7) or, by e-mail, to bertrmi(AT)colba.net . When answering, don't forget to include your complete name and postal address (it's a rule to make you eligible for the draws). Three one year subscriptions to the magazine QuébecOiseaux (or a prolongation of your current subscription) which will be drawn among the people who will have identified the bird correctly. And more: the Editor Michel Quintin offers a copy of the field guide "Oiseaux du Québec et des Maritimes" which will be also drawn among the people who will answer correctly. ----------------------- Answer to quiz 23 The former quiz bird was an adult Broad-winged Hawk (Buteo platypterus, Petite Buse). See the current issue of QuébecOiseaux for detailed text on its identification. Here are the winners of the quiz 23. The three subsciptions to QuébecOiseaux have been won by Gilles Belliveau from Beaver Dam (NB), Pierre Fiquet from Paris (France) and Hugh McGuiness from East Hampton (NY). The Paquin & Caron field guide has gone to Marguerite Larouche from Montréal (Qc). Good luck ! Have fun... MICHEL BERTRAND Sainte-Julie, Qc bertrmi(AT)colba.net ORIGINAL FRENCH MESSAGE : Le Défi 24 de QuébecOiseaux est maintenant affiché au site Internet à : http://www.quebecoiseaux.qc.ca/HTML/Defi.html Un très bel oiseau, vous verrez, qui en intriguera plusieurs. Vous trouverez là, aussi, la réponse au Défi 23. Identifiez le nouvel oiseau mystère et faites-moi parvenir votre réponse en n'oubliant pas d'inclure votre nom complet et votre adresse postale (c'est une règle pour être éligible pour les prix). SVP, ne pas inclure le présent message avec votre réponse (parce que ça me facilite le traitement des réponses reçues). Voici les noms des gagnants du Défi 23. Les trois abonnements à QuébecOiseaux ont été remportés par Gilles Belliveau de Beaver-Dam (NB), Pierre Fiquet de Paris (France) et Hugh McGuiness de East-Hampton (NY). Le guide Paquin et Caron va à Marguerite Larouche de Montréal. Bonne chance... MICHEL BERTRAND Sainte-Julie, Qc bertrmi(AT)colba.net N'oubliez pas d'identifier l'oiseau mystère : Don't forget to identify the mystery bird at : http://www.quebecoiseaux.qc.ca/HTML/Defi.html
[ << | >> | ^^ ] Subject: Least Sand vs Long-toed Stints From: Julian Hough <Jrhough1(AT)AOL.COM> Date: 7 Sep 2002 10:50am Dear All, In my humble opinion, I think that Martin's bird is a juvenile Least Sand for the following reasons: 1) Scalloped edges to the inner greater coverts (typically (always?) absent on Long-toed) 2) Loral pattern not "classic" Long-toed Stint 3) Tertials narrowly fringed rufous (often broader on many/most Long-toeds) 4) Breast streaking rather coarse in the centre and not extending onto lower breast sides as in Long-toed. 5) Pattern of the median wing-coverts is probably different in Least and Long-toed, with Long-toed showing a darker centre and whiter fringe. (The pale buff "ovals" and fringes shown by Martin's bird is probably more pro-Least.) Some of the above is what I can remember from a paper by Per Alstrom and Urban Olsson in British Birds, which would be useful reference for anyone looking for Long-toed Stint. Other features: 1)The bill base, while olive, is probably within Least Sand variation. Though many show uniformly blackish bill bases, it doesn't look brownish as in many Long-toeds . The bill colour and shape of juv. LToed always reminds me of juv. White-rumped Sandpiper. 2)The loral pattern, with the dark crown extending to the base of the bill in Long-toed is sometimes shown by Leasts, though it is not often in conjunction with the white anterior "bulge" described for Long-toed. 3)The darker ear spot often a supporting character is variable and I have seen at least two Leasts which showed an isolated ear spot at a distance. 4) The head pattern looks brighter and more 'striped' in photos of Long-toed; I don't gain this from Martin's bird. The photos are thought provoking and do show a couple of features that recall Long-toed Stint. I don't think such birds should be dismissed too easily. AS for the adult winter bird recently, Jerry Tangren wrote: "The Roger's photos illustrate a field mark often pointed out by Dennis Paulson, and which is clearly shown in the difference between the suspect bird and the Least Sandpiper: on a Least Sandpiper the back feathers are mostly dark with pale fringes while on a Long-toes Stint the feathers are mostly pale with a dark streak down the center."" I believe that the reverse is true of adults - it is Long-toed that shows the more uniformly dark feather centres. Julian Hough, CT, USA
[ << | >> | ^^ ] Subject: Fw: Dark Morph Broadwings...seeking reports of sightings From: Jim Barton <redwing1986(AT)ATTBI.COM> Date: 7 Sep 2002 2:02pm ----- Original Message ----- From: "Goodrich, Laurie" <goodrich(AT)hawkmountain.org> Dear Fellow hawk watchers and bird watchers--- Jim Barton, of Cambridge, MA, and I are working on documenting the distribution of the Dark Morph Broad-winged Hawk in the U.S. and Canada during migration and nesting seasons. We hope to present the findings of this research at the upcoming HMANA conference in Corpus Christi, TX, next March. With the help of many people, including subscribers to this list, Jim has been collecting records of Dark Morph from the U.S. and Canada since May 4, 2002, when he saw one in Watertown, MA. To the best of our knowledge, that's the farthest east that the bird has been seen. Preliminary reports are available from Jim at redwing1986(AT)attbi.com . I would like to ask all fall hawkwatchers to be on the outlook for this very rare bird (usually seen in numbers only in Texas), and to inform us of all your sightings. That will enable us to present as complete a report as possible in Corpus Christi, including the current migration season. Thanks to Dave Allinson, of Victoria, B.C., we already have one report of an immature near Prince George on September 3, 2002. Please send reports of Dark Morph BWHA to Jim Barton at the above listed email address or you can call or email me with reports (see below). Reports can be copied to me (Laurie Goodrich) at Hawk Mountain (goodrich(AT)hawkmountain.org) to ensure that they are documented. (Jim will be looking at Imperial Eagles in Spain in October, so we want to make sure that we don't miss any of your messages. ) Any questions feel free to contact Jim or I at any time.. If you see a bird, report the date, age of bird if you record that information, and the location. We have not documented a dark morph here at Hawk Mountain. But .. who knows maybe we will this year! Thanks very much for your assistance!!. Laurie Goodrich and Jim Barton ------------------------------------- Laurie Goodrich Senior Monitoring Biologist Hawk Mountain Sanctuary Association 1700 Hawk Mt. Road Kempton, PA 19529 610-756-6961; 610-756-6000 ext 230 fax: 610-756-4468 goodrich(AT)hawkmountain.org ------------------------------------ Jim Barton redwing1986(AT)attbi.com Cambridge, MA US Coordinator Proact in the Americas Campaigning for birds and their habitats before it's too late www.proactnow.org
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