[TN-Bird] Tornado Toll/ how do birds compensate?

Dear TN Birders,
       Living in an area where I would have thought that a tornado was 
possible, I was proved wrong when an F1 tornado moved through my neighborhood 
May 
14.  With numerous homes badly damaged and hundreds of trees down, vehicles 
destroyed along with other property, you have to consider it a miracle that no 
one 
was killed or seriously injured.  Several Knoxville TOS members live in this 
area.  And Migrant editor Chris Welsh and his family live at the end of the 
street behind me.  The tornado skipped to the edge of my back yard and cleared 
trees between the two street of houses before crossing the Tennessee River.  
Neither the Welshes or I had any significant damage.  And we are becoming 
accustomed to chain saws and chipper/shredders at 6 a.m.
       Others were not so fortunate.  As my son-in-law said in showing the 
photograph of their front yard, "you know it was bad when the American Red 
Cross 
canteen is parked in front of your house!"
       Can anyone tell me what happens to some of the birds when their 
nesting is disrupted by nature in such drastic fashion or does it vary by 
specie?  I 
know that chickadees only nest once, but will they try a second time in such 
circumstances?  Is there any evidence that birds compensate in their nesting 
patterns?  Thanks for any info.

Yours for better weather!
Barbara Finney
Knoxville, TN 


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