TURKEY VULTURE

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Turkey Vulture
Copyright © 2005 Eric Secker

 Conservation Concern: NONE

Population Trend: Poorly Known
 Credibility: Mod. Poor

The Turkey Vulture is a rare, but locally uncommon, breeder in the CW Region.  Breeding habitat includes bottomland forests and mature woodlands, often near grasslands or other open areas.  This species is rarely encountered on the BCN Census and accurate trends cannot be estimated.

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*:		  
  ----   13%  
   
   

 

 

Technical Notes (1997-2004 Trend)

Sample Size (Indiv.): 28

Sample Size (Records): 13

 

AVG. YEARLY RATE OF CHANGE:
(including standard error)
-108 to 388

  GOODNESS OF FIT:
Chi-square: 27.55, df 19, p 0.0925
Likelihood Ratio: 14.20, df 19, p 0.772
AIC: -23.8
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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