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ID-FRONTIERS for September 8-14, 2002
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Subject: three-toed woodpecker
From: Ian Paulsen <ipaulsen(AT)KRL.ORG>
Date: 8 Sep 2002 11:45am
HI ALL:
I heard that the woodpecker volume of the handbook of the birds of the
world splits the three-toed woodpecker into 2 species (Eurasian and North
American 3-toed woodpeckers). The only reference I can find on this split
is: Zink et al. 1995. Trans-beringia comparisons of mDNA differentiation
in birds. COndor 97:639-649.
I don't have the HBW series, so are there any toher references for this
split?
Sincerely
Ian Paulsen
Bainbridge Island, WA, USA
ipaulsen(AT)krl.org
A.K.A.: "Birdbooker"
"Rallidae all the way"
[ << | >> | ^^ ]
Subject: three-toed woodpecker
From: Angus Wilson <wilsoa02(AT)ENDEAVOR.MED.NYU.EDU>
Date: 8 Sep 2002 1:44pm
According to a note by George Sangster in the most recent issue of Dutch
Birding (24(4): p256), the split is proposed on the basis of new mitochondrial
DNA sequence data (Zink et al., 2002).
In this study, Zink and colleagues find that the three Eurasian subspecies and
two North American subspecies cluster into separate (monophyletic) groups which
differ in sequence by 4%. I assume there is much less divergence within the
clusters.
They suggest the following two species:
Picoides dorsalis - American Three-toed Woodpecker
Picoides tridactylus - Eurasian Three-toed Woodpecker
The results are described in:
Holarctic Phylogeography and Species Limits of Three-toed Woodpeckers
Condor 104(1): 167-170
ROBERT M. ZINK, SIEVERT ROHWER, SERGEI DROVETSKI, RACHELLE C. BLACKWELL-RAGO
AND SHANNON L. FARRELL
Angus Wilson
http://www.oceanwanderers.com
-------------------------------------------------
This mail sent through IMP: http://horde.org/imp/
[ << | >> | ^^ ]
Subject: African Dwarf Bittern in the Canary Islands:4th
for the W Palearctic online
From: =?iso-8859-1?Q?Ricard_Guti=E9rrez?= <GUTARB(AT)TERRA.ES>
Date: 8 Sep 2002 3:12pm
Hello
An (African) Dwarf Bittern Ixobrychus sturmii was seen and photographed in
the Canary Islands, Spain, in late august. Thanks to Ludovic Scalabre we
have now the photos online at www.rarebirdspain.net . The website celebrates
today its second aniversary.
The question would be that the original Finnish observers quoted the bird
being an immature but seeing the plumage and bare parts colour, the bird
rather looks an adult male. Any comments?.
The webpage also contains some photos of the latest Spanish Pacific Golden
Plover which are very good for ID purposes plus some news illustrated with
thumbnails.
Thank you
Ricard Gutiérrez
Catalonia, NE Spain
www.rarebirdspain.net
9.9.2002
[ << | >> | ^^ ]
Subject: Re: Least Sand vs Long-toed Stints
From: Don Roberson <creagrus(AT)MONTEREYBAY.COM>
Date: 8 Sep 2002 5:07pm
I have pointed the following out several times before, but it is worth
repeating. It is often easier to i.d. photos of LTST/LESA than to evaluate
them in the field because proportional biometrics can be measured.
Long-toed Stint not only has a long middle toe, but has a long tarsus (well,
actually, most have two of them). Using biometrics from Hayman, Marchant &
Prater (1986), both the middle toe and the tarsus of Long-toed Stint have
similar ranges: toe 20-23mm (to base of claw), tarsus 19-24. The comparative
figures for Least Sandpiper is toe 16-19, tarsus 17-21 [rather little overlap].
The bill length of Least Sandpiper (including both sexes) ranges 16-21, almost
exactly the ranges of the toe and of the tarsus. Thus in Least Sandpiper the
bill length (exposed culmen) = length of tarsus = length of middle toe.
This is all really neat because Long-tailed Stint has the same bill length as
Least Sandpiper: 16-20 mm is the range. Virtually identical. But on Long-toed
Stint both the tarsus and the middle toe exceed the bill length by 3-4mm, and
are thus 15%-20% longer than the longest bill recorded. Even given that
complete ranges are not shown in these stats, it is fair to say that on
Long-tailed Stint both the tarsus and the middle toe will significantly exceed
the length of the bill.
On Martin Reid's mystery stint, you can directly measure the bill length and
tarsus length in the next to the bottom photo, and you can also make good
estimates on various other photos. In all cases, the bill length is
essentially equal to the tarsus length. Given this, it is not important to see
the toe. Since tarsus = bill, this is a Least Sandpiper.
Every other point raised, be it color of lower mandible or plumage characters,
is matchable, in my experience, in a big group of juv. Leasts. I think the
best plumage feature is the "backward C" of Long-toed where the crown curls
into the ocular stripe and "cuts off" the supercilium. The mystery bird has
only the vague suggestion of this pattern, and nothing like the "real" thing,
as the bird Brian Daniels helped document in Monterey County some years ago
(1988). I've been looking through thousands of Least Sandpipers since, and one
does stop when one finds a vague hint of this pattern -- as in the mystery
calid -- so this feature can be shown by Leasts in a sort-of subdued way.
Now when I find those birds I try to compare bill length and tarsus length in
the field. The birds invariable (so far!) have similar lengths in these
characters. Ergo, all Leasts.
Don Roberson
Monterey Co., California
[ << | >> | ^^ ]
Subject: [BIRDCHAT] Lesser Whitethroat at Gambell (fwd)
From: Ian Paulsen <ipaulsen(AT)KRL.ORG>
Date: 9 Sep 2002 10:16am
HI ALL:
Paul Lehnman has been busy!
Ian Paulsen
Bainbridge Island, WA, USA
ipaulsen(AT)krl.org
A.K.A.: "Birdbooker"
"Rallidae all the way"
---------- Forwarded message ----------
Date: Mon, 9 Sep 2002 08:23:36 -0400
From: Laurie Larson <llarson(AT)PRINCETON.EDU>
To: BIRDCHAT(AT)listserv.arizona.edu
Subject: [BIRDCHAT] Lesser Whitethroat at Gambell
> From: Phoebetria(AT)aol.com
> Date: Sun, 8 Sep 2002 22:14:03 EDT
> Subject: New Bird for North America
>
>
> Paul Lehman's breathless phone calls are getting routine! He phoned
> this evening with word of North America's first LESSER WHITETHROAT, a
> stunning bird at Gambell that followed a brief lull in the incredible
> fall birding there this year. The nearest nesters are perhaps at Lake
> Baikal; there are a few records from Japan. This rather eclipses his
> first North American WILLOW
> WARBLER of last week.
> The weather system that brought in the bird produced gentle
> westerlies, followed by a strong SW wind with moderate rain; the wind
> kicked up to about 20 knots, with 2 hours of fairly hard rain. Paul's
> thoughts at night, during the rain: "This is what I pray for!" (Or
> maybe it was: "This is what I dream of!"). Anyhow, anticipation was
> high when he began birding that morning.
> The previous week had held Wilson's Warbler, a _flava_ Horned Lark,
> Mongolian Plover, etc. Seawatching was spectacular, with 600,000
> Short-tailed Shearwaters, 60 Pomarine Jaegers, 14 Spectacled Eiders, a
> Bean Goose (great fall record). This past day had not only the Lesser
> Whitethroat but a *new* Dusky Warbler, a *new* Siberian Accentor (both
> seen already this fall), new Gray-cheeked Thrush, Red-throated Pipits,
> Bluethroats, etc.
> Please someone post this to other friends and to any listserv groups.
> Paul is without email access for several more days and wants to get
> the word out!
>
> Ned Brinkley
>
- - - - - - -
Laurie Larson
Co-listowner, BirdChat & BirdEast
llarson(AT)princeton.edu
Princeton, NJ
For BirdChat guidelines, go to
http://www.ksu.edu/audubon/chatguidelines.html
For BirdChat archives or to change your subscription options, go to
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[ << | >> | ^^ ]
Subject: Update from Gambell
From: Laurie Larson <llarson(AT)PRINCETON.EDU>
Date: 9 Sep 2002 6:16pm
Paul Lehman writes:
> The Whitethroat and new Accentor and Dusky Warbler all still present
> today (Monday), and I've gotten goood video of all of them.
>
> PAUL
>
Laurie Larson
llarson(AT)princeton.edu
Princeton, NJ
[ << | >> | ^^ ]
Subject: blue legged shearwaters
From: Matt Sharp <sharp(AT)ACNATSCI.ORG>
Date: 10 Sep 2002 12:16pm
As an addition to the recent discussion on leg color of
Audubon's and Little Shearwater I have created a web
page showing 2 Audubon's from nearly opposites
sides of the globe both at nesting grounds at nearly
opposite times of year. Images are at
www.acnatsci.org/vireo/ID/ID.html
If VIREO has material relevant to future ID discussions
on this Listserv I will create additional pages. We only just
became able to post photos in this manner.
Please note that if you leave the Shearwater page via
the link to the VIREO homepage you will not find a link
back to the shearwater page. So remember the URL
or use the browsers back button.
Enjoy
Matt Sharp
[ << | >> | ^^ ]
Subject: Mitred Parakeet
From: KACastelein and DJLauten <birdsong(AT)HARBORSIDE.COM>
Date: 12 Sep 2002 5:38pm
Hello folks,
Not sure if this is the best place to ask this question, but for a lack
of a better one, and since it is a distributional question:
In regards to the latest AOU supplement, concerning Mitred Parakeet, am
I reading correct that the Southern California population is considered
established but not the Florida population?
Dave Lauten
Bandon OR
birdsong(AT)harborside.com
[ << | >> | ^^ ]
Subject: Re: Mitred Parakeet
From: Bruce H Anderson <Scizortail(AT)AOL.COM>
Date: 12 Sep 2002 6:08pm
Dave et al.,
To my knowledge, as of this date, no comprehensive study of the Florida
populations, or any Florida population of the Mitred Parakeet, has been
submitted to the Florida Ornithological Records Committee recommending the
addition of this species to the Florida list. Nor has any been published to
date. There are several studies of Florida psittacids in prep for
publication and/or in progress at this time.
Bruce
Bruce H. Anderson
winter season editor, Florida Region, "North American Birds"
associate editor (for bird distribution), FOS "Florida Field Naturalist"
regional editor for the FOS Field Observations Committee
2917 Scarlet Road
Winter Park, FL 32792
407-671-3137
SCIZORTAIL(AT)aol.com
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