VTBIRD Archives

October 2014

VTBIRD@LIST.UVM.EDU

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Subject:
From:
Larry and Mona Rogers <[log in to unmask]>
Reply To:
Vermont Birds <[log in to unmask]>
Date:
Wed, 1 Oct 2014 15:00:02 -0400
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               The recent discussion under "Robins and Sparrows" got me
thinking about just when migratory birds leave and arrive.  While predicting
a hard winter based on early migration seems fairly silly, just how much
effect does current weather/climate have on departure dates?  Do birds leave
earlier during cold and wet autumns?  I always thought that migratory
movement was basically driven by sun angle;  how much is caused by local
weather conditions?

                              Larry

 

 

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