This morning both Brownsville and Corpus NEXRAD displays are showing halo
designs which occur when birds are overflying the radar station. While this
does not automatically mean that birds will be grounded it usually does. I
expect migrant will spread northward as the day progresses.
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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