Message Board Search Tool
Banding Code Translator | Recent Rare Bird Sightings
©2018 Christopher Taylor (Kiwifoto.com)
Help Support!
calbirds        search ebird rarities [plot]
filter rba/cbc

  4 result(s) found...Displaying messages 1 through 4, sorted by date descending.
 

 Month/Year Breakdown (Top 15):

 Jan, 2018 - 3 e-mail(s)...
 Sep, 2017 - 1 e-mail(s)...




   Eurasian Wryneck (Jynx torquilla) - EUWR (recent eBird sightings, view CBRC records)

  1. RE: [CALBIRDS] News from the California Bird Records Committee LINK
    DATE: Jan 24, 2018 @ 2:56pm, 5 month(s) ago
    Tom,
    
    Thanks. I am interested in this question. One thing to consider is the interplay between age and the white on the central rectrices. I posted a bunch of photos on the Facebook Advanced ID site some time ago about this. But in some **juvenile** Nazca Boobies in the Galapagos, the white is showing in the central tail feathers before fledging. I am not sure if you need to be a member to see this:
    
    https://www.facebook.com/photo.phpfbid=10155071688133520 < https://www.facebook.com/photo.phpfbid=10155071688133520&set=pcb.1417872404975626&type=3&theater&ifg=1 > &set=pcb.1417872404975626&type=3&theater&ifg=1
    
    regards,
    
    Alvaro
    
    Alvaro Jaramillo
    
    alvaro@...
    
    www.alvarosadventures.com
    
    From: CALBIRDS@yahoogroups.com [mailto: CALBIRDS@yahoogroups.com ] On Behalf Of Tom Benson Thomasabenson@... [CALBIRDS]
    
    Sent: Wednesday, January 24, 2018 2:49 PM
    
    To: CALBIRDS@yahoogroups.com
    
    Subject: Re: [CALBIRDS] News from the California Bird Records Committee
    
    Alvaro,
    
    The committee reviewed a number of photos of Masked Boobies, a couple of which showed extensive white on the tail. I do not recall where those photos were from, but perhaps other committee members can chime in with the source of those photos.
    
    Tom
    
    Tom Benson
    
    Secretary, CBRC
    
    
  2. -back to top-
  3. RE: [CALBIRDS] News from the California Bird Records Committee LINK
    DATE: Jan 24, 2018 @ 2:15pm, 5 month(s) ago
    Kimball,
    
    Are there well documented (photos/specimens) Masked Boobies with
    
    extensive white on the tail
    
    Thanks,
    
    Alvaro
    
    Alvaro Jaramillo
    
    alvaro@...
    
    www.alvarosadventures.com
    
    From: CALBIRDS@yahoogroups.com [mailto: CALBIRDS@yahoogroups.com ] On Behalf
    
    Of Kimball Garrett kgarrett@... [CALBIRDS]
    
    Sent: Wednesday, January 24, 2018 12:03 PM
    
    To: CALBIRDS@yahoogroups.com
    
    Subject: [CALBIRDS] News from the California Bird Records Committee
    
    Birders,
    
    The California Bird Records Committee held its annual meeting in Los Gatos
    
    19-20 January. Steve Rottenborn, CBRC Chair, has provided the following
    
    highlights of that meeting along with some recent CBRC decisions.
    
    COMMITTEE MEMBERSHIP
    
    Dan Singer, Peter Pyle, and Jim Pike were elected as voting members. Steve
    
    Rottenborn, Dan Singer, and Tom Benson were elected as Chair, Vice Chair,
    
    and Secretary, respectively. The terms of Lauren Harter, Kristie Nelson, and
    
    Scott Terrill expired.
    
    STATE LIST
    
    Recently accepted additions to the California list are all from offshore
    
    islands - Jouanin's Petrel (1 Jun 2016, Santa Barbara Island, SBA), Kermadec
    
    Petrel (8 Sep 2017, Southeast Farallon Island, SF), and Eurasian Wryneck (25
    
    Sep 2017, San Clemente Island, LA). With these additions, the state list
    
    stands at 668 species. Other potential first state records awaiting CBRC
    
    review include Band-rumped Storm Petrel (10-11 Nov 2017, Southeast Farallon
    
    Island, SF), Citrine Wagtail (15-16 Dec 2017, Yolo Bypass Wildlife Area,
    
    YOL), and Tropical Parula (5 Jan 2018-present, Huntington Beach, ORA).
    
    REVIEW LIST
    
    Dusky-capped Flycatcher was removed from the Review List on the basis of the
    
    number of accepted records (110 at the time of the meeting, with an average
    
    of 4.3/year over the last 10 years) and relatively high acceptance rate
    
    (89%). All five current wintering Dusky-capped Flycatchers that were first
    
    recorded in 2017 will still be reviewed; please send your documentation for
    
    these individuals, or any other review species, to the CBRC secretary at
    
    secretary@... or by
    
    using the online form at
    
    http://www.californiabirds.org/report_sighting.html.
    
    OTHER DISCUSSIONS/DECISIONS
    
    Identification of adult Masked and Nazca boobies is straightforward given
    
    adequate views, but identification of subadults is more challenging. Along
    
    with the recent increase in numbers of adult Masked and, especially, Nazca
    
    boobies in California, the Committee has wrestled with the identity of a
    
    number of subadult birds. To supplement information in the identification
    
    literature, the CBRC reached out to experts Robert Pitman and Mike Force for
    
    information on how quickly subadults start to acquire the "adult" bill
    
    color, how reliable the presence/extent of white on the central rectrices is
    
    for identification, and how frequently hybridization between the two species
    
    occurs. More information on all these issues is needed, but it appears that
    
    some immatures begin to acquire the greenish (Masked) or pinkish (Nazca)
    
    bill color after about a year, and the presence of those colors is the most
    
    reliable field character. Until those colors are apparent in the bill,
    
    reliable identification may not be possible. Presence of extensive white in
    
    the central rectrices is suggestive of Nazca, but some Nazcas lack extensive
    
    white, and a small percentage of Masked Boobies can show extensive white.
    
    Hybridization between the two species does occur, but hybrids are apparently
    
    infrequent enough that the probability of encountering one is very low.
    
    Using these ID criteria, the CBRC is accepting a number of records to
    
    species, but juveniles, as well as subadults that are not well seen or that
    
    lack expression of some "adult" bill color, may be accepted only as
    
    "Masked/Nazca Booby".
    
    The Committee discussed photos of a California Blue-headed/Cassin's Vireo
    
    that looked quite good for Blue-headed in lower-light exposures (with
    
    apparently sharp demarcation between dark auriculars and white throat) and
    
    much better for Cassin's in more strongly lit or better exposed images,
    
    which blurred the demarcation between the auriculars and throat. The images
    
    of this individual emphasized the importance of obtaining as much
    
    documentation of putative Blue-headed Vireo records as possible (in this
    
    case, recordings of the song matched Cassin's well) while reiterating how
    
    difficult the identification of some Blue-headed/Cassin's Vireos can be.
    
    The Committee decided to re-evaluate the 4 Dec 1986-3 Apr 1987 record of
    
    Oriental Greenfinch from Arcata, HUM. This record was previously not
    
    accepted by the CBRC on the grounds of questionable natural occurrence, as
    
    there were no North American records away from the western Aleutians at the
    
    time and the Committee was concerned about the potential for the bird to
    
    have escaped (or been released) from captivity. The species was then placed
    
    on the CBRC's Supplemental List. With more recent records from the
    
    Pribilofs and British Columbia suggesting a pattern of occurrence, the CBRC
    
    will re-evaluate the record.
    
    The Introduced Birds Subcommittee (IBSC), headed up by Kimball Garrett, will
    
    continue to monitor whether any introduced species warrant addition to the
    
    State List. Research into distribution, habitat associations, breeding
    
    biology, and trends in abundance of introduced species is needed before the
    
    CBRC is likely to add any new introduced species to the state list.
    
    Please feel free to visit the CBRC's webpage at
    
    http://www.californiabirds.org/ for updates and additional information. If
    
    you have any questions about the CBRC, please contact Steve Rottenborn
    
    ( chair@... ) or Tom
    
    Benson ( secretary@...
    
    ).
    
    Finally, I (KLG) will continue to serve as the occasional CBRC
    
    "spokesperson" on Calbirds for the coming year.
    
    Kimball L. Garrett
    
    Ornithology Collections Manager
    
    Natural History Museum of Los Angeles County
    
    900 Exposition Blvd.
    
    Los Angeles, CA 90007 USA
    
    kgarrett@...
    
    
  4. -back to top-
  5. News from the California Bird Records Committee LINK
    DATE: Jan 24, 2018 @ 12:02pm, 5 month(s) ago
    Birders,
    
    The California Bird Records Committee held its annual meeting in Los Gatos 19-20 January. Steve Rottenborn, CBRC Chair, has provided the following highlights of that meeting along with some recent CBRC decisions.
    
    COMMITTEE MEMBERSHIP Dan Singer, Peter Pyle, and Jim Pike were elected as voting members. Steve Rottenborn, Dan Singer, and Tom Benson were elected as Chair, Vice Chair, and Secretary, respectively. The terms of Lauren Harter, Kristie Nelson, and Scott Terrill
    expired.
    
    STATE LIST Recently accepted additions to the California list are all from offshore islands - Jouanin's Petrel (1 Jun 2016, Santa Barbara Island, SBA), Kermadec Petrel (8 Sep 2017, Southeast Farallon Island, SF), and Eurasian Wryneck (25 Sep 2017,
    San Clemente Island, LA). With these additions, the state list stands at 668 species. Other potential first state records awaiting CBRC review include Band-rumped Storm Petrel (10-11 Nov 2017, Southeast Farallon Island, SF), Citrine Wagtail (15-16 Dec 2017,
    Yolo Bypass Wildlife Area, YOL), and Tropical Parula (5 Jan 2018-present, Huntington Beach, ORA).
    
    REVIEW LIST Dusky-capped Flycatcher was removed from the Review List on the basis of the number of accepted records (110 at the time of the meeting, with an average of 4.3/year over the last 10 years) and relatively high acceptance rate (89%). All
    five current wintering Dusky-capped Flycatchers that were first recorded in 2017 will still be reviewed; please send your documentation for these individuals, or any other review species, to the CBRC secretary at
    secretary@... or by using the online form at
    http://www.californiabirds.org/report_sighting.html .
    
    OTHER DISCUSSIONS/DECISIONS Identification of adult Masked and Nazca boobies is straightforward given adequate views, but identification of subadults is more challenging. Along with the recent increase in numbers of adult Masked and, especially, Nazca boobies
    in California, the Committee has wrestled with the identity of a number of subadult birds. To supplement information in the identification literature, the CBRC reached out to experts Robert Pitman and Mike Force for information on how quickly subadults start
    to acquire the "adult" bill color, how reliable the presence/extent of white on the central rectrices is for identification, and how frequently hybridization between the two species occurs. More information on all these issues is needed, but it appears that
    some immatures begin to acquire the greenish (Masked) or pinkish (Nazca) bill color after about a year, and the presence of those colors is the most reliable field character. Until those colors are apparent in the bill, reliable identification may not be
    possible. Presence of extensive white in the central rectrices is suggestive of Nazca, but some Nazcas lack extensive white, and a small percentage of Masked Boobies can show extensive white. Hybridization between the two species does occur, but hybrids
    are apparently infrequent enough that the probability of encountering one is very low. Using these ID criteria, the CBRC is accepting a number of records to species, but juveniles, as well as subadults that are not well seen or that lack expression of some
    "adult" bill color, may be accepted only as "Masked/Nazca Booby".
    
    The Committee discussed photos of a California Blue-headed/Cassin's Vireo that looked quite good for Blue-headed in lower-light exposures (with apparently sharp demarcation between dark auriculars and white throat) and much better for
    Cassin's in more strongly lit or better exposed images, which blurred the demarcation between the auriculars and throat. The images of this individual emphasized the importance of obtaining as much documentation of putative Blue-headed Vireo records as possible
    (in this case, recordings of the song matched Cassin's well) while reiterating how difficult the identification of some Blue-headed/Cassin's Vireos can be.
    
    The Committee decided to re-evaluate the 4 Dec 1986-3 Apr 1987 record of Oriental Greenfinch from Arcata, HUM. This record was previously not accepted by the CBRC on the grounds of questionable natural occurrence, as there were no North
    American records away from the western Aleutians at the time and the Committee was concerned about the potential for the bird to have escaped (or been released) from captivity. The species was then placed on the CBRC's Supplemental List. With more recent
    records from the Pribilofs and British Columbia suggesting a pattern of occurrence, the CBRC will re-evaluate the record.
    
    The Introduced Birds Subcommittee (IBSC), headed up by Kimball Garrett, will continue to monitor whether any introduced species warrant addition to the State List. Research into distribution, habitat associations, breeding biology,
    and trends in abundance of introduced species is needed before the CBRC is likely to add any new introduced species to the state list.
    
    Please feel free to visit the CBRC's webpage at
    http://www.californiabirds.org/ for updates and additional information. If you have any questions about the CBRC, please contact Steve Rottenborn ( chair@... ) or Tom Benson ( secretary@... ).
    
    Finally, I (KLG) will continue to serve as the occasional CBRC "spokesperson" on Calbirds for the coming year.
    
    Kimball L. Garrett Ornithology Collections Manager Natural History Museum of Los Angeles County 900 Exposition Blvd. Los Angeles, CA 90007 USA kgarrett@...
  6. -back to top-
  7. Eurasian Wryneck, San Clemente Island (photos, additional information, but no additional sightings) LINK
    DATE: Sep 27, 2017 @ 7:50pm, 9 month(s) ago
    Birders,
    As many of you have probably heard by now, on 25 September 2017, a EURASIAN WRYNECK was photographed on San Clemente Island. Searches for the bird on the following two days were fruitless. Further, San Clemente Island is active U.S. Navy base and public visitation is not possible, aside from staff working on various endangered species recovery efforts. As this record has, understandably, generated a lot of interest, I wanted to provide a little background to the observation and the context of this record in North America. 
    On Monday, 25 September 2017, Brian Flick, a U.S. Navy officer encountered an unfamiliar bird while at Lemon Tank, a small, willow-lined reservoir on San Clemente Island. He was fortunate enough to have captured several photos during his very brief encounter and I have temporarily uploaded them to the San Clemente Historic Records account on eBird, viewable here: http://ebird.org/ebird/view/checklist/S39430855
    Late that evening, after being unable to find anything on-line or in field guides that matched what he had seen, he emailed a sketch to Gary Nunn just as cell service on San Clemente Island crashed. Gary forwarded me the sketch, which I received the following morning, and we agreed it was clearly of a Eurasian Wryneck. The context, however, was entirely lacking as the email contained only a photograph of the sketch and no other information regarding date or location or even who made the sketch. 
    On Tuesday morning, after viewing the sketch, I returned (as scheduled) to San Clemente Island for my next work shift, and, taking a shot in the dark, went to check Lemon Tank with Nicole Desnoyers. We had little to go on, and found even less. Leaving, we ran into Brian, and when asked about the sketch (I think I ignored all pleasantries and just blurted out, “What’s the deal with the drawing that you sent to Gary!”) he presented the watercolor shown in his eBird checklist below (under his eBird alias, Johnny Galt). Note, he is unable to upload photos via a Navy computer. http://ebird.org/ebird/view/checklist/S39402191
    I asked for more details about the encounter, and he provide a verbal description similar to that in the checklist above. At that point I first learned he had taken photos but that they were, in his words, “too blurry.” Obviously the photos (linked in the first checklist) are not prize-winning, but they clearly show a Eurasian Wryneck! The soil in the background is also that of the sandy bluffs that surround Lemon Tank. I viewed the pictures on this camera, and saw that they were among other photos clearly taken at Lemon Tank on that date.
    We checked again that afternoon, together, and then Nicole and I looked again this morning (27 September), using playback sparingly, but again came up empty. Whether or not it is still on San Clemente Island, I cannot say. Until Brian has access to his personal computer, he has provided me with copies of the original files, which I cropped and shared. He plans to submit account and documentation to the California Bird Records Committee.
    
    If endorsed by the CBRC, this would be the first record for California, and certainly one of the most unexpected. From a continental perspective, there are two previous records of this strange, Old World woodpecker, both from Alaska, with an additional unaccepted, but bizarre record from Indiana (Howell et al. 2014).
    The first record for North America was one “secured” by a collector on 8 September 1945 at Cape Prince of Wales, Alaska, the westernmost point of mainland North America (Bailey 1945). My understanding is that this bird was found dead by a local collector, Dwight Tevuk.
    On 16 February 2000, a mummified bird (oddly with both legs broken, but fresh plumage) was found on a military base in Indiana, but was presumed to have been “entombed” in a shipping container with European origins and was not considered to be a wild vagrant (Dunning et al. 2002).
    The second valid record, and the first Eurasian Wryneck observed ALIVE in North America was one found by Paul Lehman at Gambell, St. Lawrence Island, Alaska, where it was photographed and present 2-5 September 2003 (Tobish 2004, apologies if there is a better primary source). 
    
    San Clemente Island is a known vagrant trap, with such stand-out records as California's first Bluethroat, first Siberian Stonechat, and the state's second Red-flanked Bluetail. A Eurasian Wryneck, however, was unlikely on anyone's list of the next species to occur in California.
    Enjoy the rest of fall migration!
    Justyn Stahl San Clemente Island
    Literature cited (with pdfs if available):
    Bailey, A. M. 1945. Wryneck from Cape Prince of Wales, Alaska. Auk 64:456. https://sora.unm.edu/sites/default/files/journals/auk/v064n03/p0456-p0456.pdf
    Dunning, J.B., Jr. et al. 2002. A Eurasian Wryneck specimen from southern Indiana. North American Birds 56(3): 265-267 https://sora.unm.edu/sites/default/files/journals/nab/v056n03/p00265-p00267.pdf
    Howell, S.N.G., Lewington, I., and Russel, W. 2014. Rare Birds of North America . Princeton University Press.
    Tobish, T. 2004. Alaska. North American Birds 58(1):125-128. https://sora.unm.edu/sites/default/files/journals/nab/v058n01/p00125-p00128.pdf
    Pictorial Highlights.  North American Birds  58(1):171-176. https://sora.unm.edu/sites/default/files/journals/nab/v058n01/p00171-p00176.pdf
  8. -back to top-


-revision history-
v1.30 - 01/05/16 - Revamped cloud logic, optimized database queries, linked to eBird rarities.
v1.23 - 12/08/11 - Added direct link to CBRC records.
v1.22 - 12/03/11 - Corrected GMT offsets on dates. Added last 5 posts at top.
v1.21 - 11/24/11 - Added direct link to range map for NA birds.
v1.2  - 11/23/11 - Greatly improved graphing technology - separates month vs. year by posts. Added species auto-complete functionality.
v1.14 - 11/22/11 - Added cloud bubble for common thread topics.
v1.13 - 11/22/11 - Added integrated photos where available.
v1.12 - 11/22/11 - Added multiple input boxes for additional refinement, negative search criteria (eg. -keyword).
v1.11 - 11/22/11 - Added banding code, species look-up. Also direct link to recent eBird observations.
 v1.1 - 11/22/11 - Added 'date' functionality. Shows top 'month/year' combinations for a query. Restrict results to that 'month/year'.
 v1.0 - 11/21/11 - Initial version coded. Currently archiving 'lacobirds' and 'calbirds'.