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BOBOLINK

The Bobolink is a fairly common breeder in northern portions of IL and IN, and northward. Bobolinks usually breed in mesic to wet mesic grasslands. Updated BCN trends show an annual increase of 2% in our area, up considerably from previous 2004 estimates. Removal of invasive brush and conversion of farmland to grassland  have proven to be extremely successful for this species.  June hay mowing in the agricultural portions of our region remains a  threat: it destroys nests, eggs and young. However, Bobolinks also still face many threats on their wintering grounds in the southern hemisphere. Photo: © Eric Secker

BOBOLINK  

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

    Annual Change Pct. Error      
  PIF 15   219   1029   Normal**   +2% +/-3%      

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CW-PR1

 

 

 

 

 

 

 

 

 

Stable

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1999-2007 TREND - Point Counts

 

 

 

 

 

 

 

 

BOBOLINK

 

 

 

 

    Goodness of Fit
Chi-Square: p= 0
     

 

 

 

 

 

 

 

 

Fails

 

 

 

    model fits if p >0.05 (model
estimate is not significantly
dif. from observed counts)
     
           

 

     
Copyright © 2008 Audubon - Chicago Region & Bird Conservation Network