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BLUE-GRAY GNATCATCHER

The Blue-gray Gnatcatcher is an uncommon, but rapidly increasing, breeder in the CW Region. It has expanded its range northward significantly during the past twenty years. BCN trends show a sizeable, significant annual increase. This species nests in a wide variety of habitats, but often in open areas of mixed deciduous trees, especially oak woodlands. Photo: © Jerry Kumery

BLUE-GRAY GNATCATCHER  

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

    Annual Change Pct. Error      
  None Noted   115   483   Normal**   +22% +/-9%      

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Strong Increase

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1999-2007 TREND - Point Counts

 

 

 

 

 

 

 

 

BLUE-GRAY GNATCATCHER

 

 

 

 

    Goodness of Fit
Chi-Square: p= 0.0275
     

 

 

 

 

 

 

 

 

Fails

 

 

 

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

 

     
Copyright © 2008 Audubon - Chicago Region & Bird Conservation Network