[texbirds] Re: Observation of bird migration using weather forecasting technology, 3/18/15
- From: "Jean Martin" <jeanmartin@xxxxxxxxxxxxx>
- To: <jkestner@xxxxxxxxxx>, "'Texbirds'" <texbirds@xxxxxxxxxxxxx>, "'LABIRD-L'" <LABIRD-L@xxxxxxxxxxxxxxxx>, <jarvin@xxxxxxxx>
- Date: Wed, 18 Mar 2015 16:51:30 -0500
Two friends and I were in the Rio Grande Valley over the past weekend and we
saw northward flights of several groups of Turkey Vultures totaling perhaps 200
individuals - some in kettles and some in streams.
Jean Martin
Austin
-----Original Message-----
From: texbirds-bounce@xxxxxxxxxxxxx [mailto:texbirds-bounce@xxxxxxxxxxxxx] On
Behalf Of jkestner@xxxxxxxxxx
Sent: Wednesday, March 18, 2015 3:54 PM
To: Texbirds; LABIRD-L; jarvin@xxxxxxxx
Subject: [texbirds] Re: Observation of bird migration using weather forecasting
technology, 3/18/15
Speaking of migrating raptors, I was at Riverside Park in Victoria over the
weekend and counted 39 Turkey Vultures floating northward (plus an Eastern
Bluebird taking food to a nest hole!).
Judy Kestner
Corpus Christi
---- John Arvin <jarvin@xxxxxxxx> wrote:
=============
out of Texas and into western Louisiana. Upper level winds (as measured by
"weather balloon" released twice daily by NOAA) vary from due S at 17kts at
Brownsville to W at 4 kts at Corpus Christi to SW at 13 its at Lake Charles.
All NEXRADS are in precipitation mode except New Orleans.
Between rain returns and probable temperature inversions I cannot see any
definite trans-Gulf migrants arriving and it is still quite early for there to
be enough migrant traffic to really show up on radar returns. However I expect
that there will be migrants put down by the weather and these should be looked
for in coastal woodlots and other traditional stop-over locations. Each day
from now through early May increases the likelihood of observable migration.
Large kettles of migrating raptors are just a few days away. The forecast
weather for the weekend will likely give us a nice early season migration
phenomenon.
John C. Arvin
Research Associate
Gulf Coast Bird Observatory
103 West Hwy 332
Lake Jackson, TX 77566
jarvin@xxxxxxxx
www.gcbo.org
Austin, Texas
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