KILLDEER

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Killdeer
Copyright © 2005 Eric Secker

 Conservation Concern: NONE

Population Trend: Substantial Decrease
Credibility: Good

The Killdeer is a common statewide breeder.  Preferred habitat includes open, dry fields, banks of lakes and marshes, and gravel roadsides.  This species appears to be notably declining in preserved areas sampled by the BCN Census, but marshlands and roadsides are not adequately sampled and this species may be increasing in those areas.

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*:		  
  -30%   -2%  
   
   

 

 

Technical Notes (1997-2004 Trend)

Sample Size (Indiv.): 102

Sample Size (Records): 58

 

AVG. YEARLY RATE OF CHANGE:
(including standard error)
-46 to -14

  GOODNESS OF FIT:
Chi-square: 100.00, df 85, p 0.1273
Likelihood Ratio: 91.58, df 85, p 0.2937
AIC: -78.42
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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