DOWNY WOODPECKER

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Downy Woodpecker
Copyright © 2005 Eric Secker

 Conservation Concern: NONE

Population Trend: Stable
 Credibility: Mod. Good

The Downy Woodpecker is a common statewide breeder.  Breeding habitat is varied but woodlands and savannas are most frequently used.  Nests in tree cavities. This species appears to be relatively stable in the CW Region based on estimated trends.

Trend Level

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1997-2004 Trend
 Point Count Data		 1988-2004 Trend*
 All Observation Types

*Data gathered using a assortment of sampling methods  - for casual inferences only
  Avg. Yearly
Rate of Change:

The vertical axis numbers represent an index of the population change.

Note that the scales may vary between graphs.

 Avg. Yearly
Rate of Change*:		  
  2%   0%  
   
   

 

 

Technical Notes (1997-2004 Trend)

Sample Size (Indiv.): 268

Sample Size (Records): 215

 

AVG. YEARLY RATE OF CHANGE:
(including standard error)
-12 to 17

  GOODNESS OF FIT:
Chi-square: 196.61, df 191, p 0.3751
Likelihood Ratio: 201.10, df 191, p 0.294
AIC: -180.9
NOTE: (model fits if p values are above 0.05)

Download Table of All Observations

 
 

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Copyright © 2005 Audubon - Chicago Region & Bird Conservation Network

 
 
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