[NatureNS] Northeast Reverse Migration

From: "John Kearney" <john.kearney@ns.sympatico.ca>
To: <naturens@chebucto.ns.ca>
Date: Mon, 19 Oct 2009 11:41:58 -0300
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For the past 3 days, I have seen hundreds of American Robins flying
northeastward along the Northumberland Strait. They are travelling in flocks
ranging in size from 6 to 40-50. They are consistently flying in this one
direction, given a few degrees north or east. The winds have been
consistently from the North or Northeast. So this movement is not a result
of flying downwind which is believed to be a frequent cause of reverse
migration.  Any ideas on why such a large reverse migration would take place
and last for 3 days?


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<p class=3DEmailText><font size=3D3 face=3D"Arno Pro Smbd"><span =
style=3D'font-size:
12.0pt'>For the past 3 days, I have seen hundreds of American Robins =
flying
northeastward along the <st1:place w:st=3D"on">Northumberland =
Strait</st1:place>.
They are travelling in flocks ranging in size from 6 to 40-50. They are
consistently flying in this one direction, given a few degrees north or =
east. The
winds have been consistently from the North or Northeast. So this =
movement is
not a result of flying downwind which is believed to be a frequent cause =
of
reverse migration. &nbsp;Any ideas on why such a large reverse migration =
would take
place and last for 3 days?<o:p></o:p></span></font></p>

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