[NatureNS] Siskins & Other Flocks

Date: Wed, 15 Feb 2012 11:40:58 -0400
To: NatureNS@chebucto.ns.ca
From: Angus MacLean <angusmcl@ns.sympatico.ca>
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Had a visit early this morning by ~30 PIne Siskins, the first for us 
this winter. Usually we get them in mid-winter & they stay but not 
this flock which exhibited the frenetic activity associated with 
wandering flocks in winter. In the past 10 days we have had goldfinch 
flocks of ~75 & 50. These flocks appear to act similarily; very few 
actually feed, most appear unsure of what to do, they flush without 
cause & rarely spend more than 30-40 mins. before moving on.
One wonders what drives such flocks?
Angus

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