[TN-Bird] Re: Early fall migrants or Post-breeding dispersal
- From: "Rick Knight" <RKnight@xxxxxxxxxxxxx>
- To: "TN-Bird" <tn-bird@xxxxxxxxxxxxx>
- Date: Tue, 26 Aug 2003 15:47:30 -0400
Dev et al.,
To answer your query about early migrants, let me cite some sightings that I
made while working on LSU's Migration Over the Gulf Project (the oil rig
study) from 1998-2000. Given that all of these sightings were made about 60
miles south of the Louisiana coast, I'd say that they certainly were
southbound migrants. All of these species were seen on the oil platform.
July (2000):
Yellow Warbler
Prothonotary Warbler
Am. Redstart
La. Waterthrush
Black & white Warbler
(Of these 5 species, all except Yellow breed in LA.)
Aug. (1998 & 1999)
N. Parula
Yellow Warbler
Yellow-thr. Warbler
Prairie Warbler
Cerulean Warbler
Black & white Warbler
Am. Redstart
Prothonotary Warbler
Swainson's Warbler
Worm-eating Warbler
La. Waterthrush
No. Waterthrush
Ovenbird
Com. Yellowthroat
Kentucky Warbler
Hooded Warbler
Of these 16 species, 4 do not breed in LA (YWAR, NOWA, CERW, OVEN), at least
according to the "Louisiana Breeding Bird Atlas".
An example of what might be seen on one day:
19 Aug 1998 at Ewing Bank 826 (about 60 miles south of Grand Isle, LA) --
N. Parula - 4
Yellow Warbler - 13
Yellow-thr. Warbler - 2
Cerulean Warbler - 2
Black & white Warbler - 5
Am. Redstart - 8
Prothonotary Warbler - 21
Ovenbird - 1
N. Waterthrush - 6
Kentucky Warbler - 10
Hooded Warbler - 5
(That's 77 warblers of 11 species.)
Other than swallows, few other passerines were observed before September (1
Red-eyed Vireo in Aug.).
I don't know about you all, but I was impressed & surprised by the diversity
and numbers of early migrants.
Here in Tennessee it is difficult to know whether early warblers are
migrants or dispersing locals, but way out in the Gulf of Mexico it was easy
to decide!
Just one hillbilly's perspective.
###################
Rick Knight
Johnson City, TN
rknight@xxxxxxxxxxxxx
-----Original Message-----
From: John Devereux Joslin <jdjoslin@xxxxxxxxx>
To: TN-Bird <tn-bird@xxxxxxxxxxxxx>
Date: Tuesday, August 26, 2003 1:59 PM
Subject: [TN-Bird] Early fall migrants or Post-breeding dispersal
> This is the time of year when I am always wondering whether the
>neotropical migrants that I get in my yard or under my sprinkler are (1)
>really early fall migrants already on their way south or (2) birds that
>bred or grew up not that far away and are just exhibiting "post-breeding
>dispersal."
> This year recently (August 21-22) I have had a Cerulean Warbler and
>a Chestnut-sided Warbler in my sprinkler. Typically this time of year I
>also get American Redstarts, Black-throated Green Warblers and
>Black-and-White Warblers. All of these are species that commonly breed
>within 25-50 miles of here in the higher elevations of the northern
>Cumberland Plateau.
> So what do you think? Are these guys already heading south? Or are
>they just wandering around before the trip?
>
>One other note: Yesterday (Monday, Aug. 25) there one was a single
>immature Short-billed Dowitcher at Eagle Bend Fish Hatchery, Anderson
>Co., TN
>
>Dev Joslin
>Oak Ridge, Roane Co., TN
>
>
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=================NOTES TO SUBSCRIBER=====================
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with 'unsubscribe' in the Subject field.
* * * * * * * * * * * * * * * * * * * * * * * * * * * * *
Topographical Maps located at http://topozone.com/find.asp
* * * * * * * * * * * * * * * * * * * * * * * * * * * * *
Visit the Tennessee Ornithological Society
web site at http://www.tnbirds.org
* * * * * * * * * * * * * * * * * * * * * * * * * * * * *
TN-Bird Net Owner: Wallace Coffey, Bristol, TN
jwcoffey@xxxxxxxxxx (423) 764-3958
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