[TN-Bird] migrants and ragweed

  • From: Bill Pulliam <bb551@xxxxxxxxxxxxx>
  • To: TN-Bird <tn-bird@xxxxxxxxxxxxx>
  • Date: Thu, 28 Sep 2006 20:32:41 -0500

The last week I have noticed large numbers of warblers and vireos  
foraging in the thickets of giant ragweed around my place (Ambrosia  
trifida, the one with big, tri-lobed leaves that grows 12+ feet tall  
in dense stands along creeks and roadsides).  Tennessee Warblers have  
been especially numerous, but they are especially numerous everywhere  
lately.  There have also been Nashville, Magnolia, and Bay-breasted  
Warblers and an assortment of vireos.  I haven't been able to tell if  
they are gleaning insects or if they are actually feeding on the  
ragweed flowers.  Does anyone know anything about this particular  
association?

Bill Pulliam
Hohenwald TN
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