SORA

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Sora
Copyright © 2005 Eric Secker

 Conservation Concern: NONE

Population Trend: Poorly Known
Credibility: Poor

The Sora is an uncommon breeder in the CW Region.  Preferred habitat includes vegetated marshes.  This species is poorly sampled by the BCN Census.  Sites where this species has been located have not been monitored on a consistent basis and accurate trends are difficult to estimate.

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*:		  
  ----   ----  
   
   

 

 

Technical Notes (1997-2004 Trend)

Sample Size (Indiv.): 6

Sample Size (Records): 5

 

AVG. YEARLY RATE OF CHANGE:
(including standard error)
-123 to -44

  GOODNESS OF FIT:
Chi-square: 4.72, df 4, p 0.317
Likelihood Ratio: 4.80, df 4, p 0.3082
AIC: -3.2
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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