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PURPLE MARTIN

The Purple Martin is an uncommon, but locally common breeder in the CW Region. These often colonial birds historically nested in tree cavities, but many populations in our area are now largely dependant on man-made "martin houses". Preferred habitat is usually open fields or open areas near water. Data on this species is too limited to draw any conclusions. Photo: © Eric Secker

PURPLE MARTIN  

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

    Annual Change Pct. Error      
  None Noted   9   46   Poor   +1% +/-25%      

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Uncertain

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1999-2007 TREND - Point Counts

 

 

 

 

 

 

 

 

PURPLE MARTIN

 

 

 

 

    Goodness of Fit
Chi-Square: p= 0.0573
     

 

 

 

 

 

 

 

 

Passes

 

 

 

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

 

     
Copyright © 2008 Audubon - Chicago Region & Bird Conservation Network